Question about Heating & Cooling

Open Question

Limit circuit open or external load on "w" - Heating & Cooling

Posted by Anonymous on

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

TROUBLE CODE P 1613 IN WV PASSAT 99


P1102O2S Heating Circuit Bank 1 Sensor 1 Voltage Too Low/Air Leak
P1105O2S Heating Circuit Bank 1 Sensor 2 Short To Positive P1107O2S Heating Circuit Bank 2 Sensor 1 Short To Positive P1110O2S Heating Circuit Bank 2 Sensor 2 Short To Positive P1113O2S Sensor Heater Resistance Too High Bank 1 Sensor 1 P1115O2S Sensor Heater Circuit Short To Ground Bank 1 Sensor 1
P1116O2S Sensor Heater Circuit Open Bank 1 Sensor 1
P1117O2S Sensor Heater Circuit Short To Ground Bank 1 Sensor 2
P1118O2S Sensor Heater Circuit Open Bank 1 Sensor 2
P1127Long Term Fuel Trim B1 System Too Rich
P1128Long Term Fuel Trim B1 System Too Lean
P1129Long Term Fuel Trim B2 System Too Rich
P1130Long Term Fuel Trim B2 System Too Lean
P1136Long Term Fuel Trim Add. Fuel B1 System Too Lean
P1137Long Term Fuel Trim Add. Fuel B1 System Too Rich
P1138Long Term Fuel Trim Add. Fuel B2 System Too Lean
P1139Long Term Fuel Trim Add. Fuel B2 System Too Rich
P1141Load Calculation Cross Check Range/Performance
P1144Mass Air Flow Sensor Open/Short To Ground.
P1145Mass Air Flow Sensor Short To Positive.
P1146Mass Air Flow Sensor Supply Voltage.
P1155Manifold Absolute Pressure Sensor Short To Positive.
P1156Manifold Absolute Pressure Sensor Open/Short To Ground. P1157Manifold Absolute Pressure Sensor Supply Voltage.
P1160Intake Air Temperature Sensor Short To Ground.
P1161Intake Air Temperature Sensor Open/Short To Positive. P1162Intake Air Temperature Sensor Short To Ground.
P1163Fuel Temperature Sensor Open/Short To Positive.
P1164Fuel Temperature Sensor Implausible Signal.
P1171Throttle Actuation Potentiometer Sign. 2 Range/Performance P1172Throttle Actuation Potentiometer Sign. 2 Signal Too Low P1173Throttle Actuation Potentiometer Sign. 2 Signal Too High P1176Rear O2S Correction
P1177O2 Correction Behind Catalyst B1 Limit Attained
P1196O2S Heater Circuit Bank 1 Sensor 1 Electrical Malfunction P1197O2S Heater Circuit Bank 2 Sensor 1 Electrical Malfunction P1198O2S Heater Circuit Bank 1 Sensor 2 Electrical Malfunction P1199O2S Heater Circuit Bank 2 Sensor 2 Electrical Malfunction P1213Injector Circuit Cylinder 1 Short To Positive
P1214Injector Circuit Cylinder 2 Short To Positive
P1215Injector Circuit Cylinder 3 Short To Positive
P1216Injector Circuit Cylinder 4 Short To Positive
P1217Injector Circuit Cylinder 5 Short To Positive
P1218Injector Circuit Cylinder 6 Short To Positive
P1225Injector Circuit Cylinder 1 Short To Ground
P1226Injector Circuit Cylinder 2 Short To Ground
P1227Injector Circuit Cylinder 3 Short To Ground
P1228Injector Circuit Cylinder 4 Short To Ground
P1229Injector Circuit Cylinder 5 Short To Ground
P1230Injector Circuit Cylinder 6 Short To Ground
P1237Injector Circuit Open Cylinder 1
P1238Injector Circuit Open Cylinder 2
P1239Injector Circuit Open Cylinder 3
P1240Injector Circuit Open Cylinder 4
P1241Injector Circuit Open Cylinder 5
P1242Injector Circuit Open Cylinder 6
P1245Needle Lift Sensor Short To Ground
P1246Needle Lift Implausible Signal
P1247Needle Lift Sensor Open/Short To Positive
P1248Start Of Cold Start Injector Control Difference
P1251Start Of Cold Start Injector Short To Positive
P1252Start Of Cold Start Injector Open/Short To Ground
P1255Engine Coolant Temperature Sensor Short To Ground
P1256Engine Coolant Temperature Sensor Open/Short To Positive P1300Misfire Detected, Fuel Level Too Low
P1250Fuel Level Too Low P1325Cyl. 1 Knock Control Limit Attained
P1326Cyl. 2 Knock Control Limit Attained
P1327Cyl. 3 Knock Control Limit Attained
P1328Cyl. 4 Knock Control Limit Attained
P1329Cyl. 5 Knock Control Limit Attained
P1330Cyl. 6 Knock Control Limit Attained
P1336Engine Torque Adaption At Limit
P1337CMP Sensor Bank 1 Short To Ground
P1338CMP Sensor Bank 1 Open Circuit Or Short To Positive P1340CKP/CMP Sensor Signals Out Of Sequence
P1341Ignition Coil Output Stage 1 Short To Ground
P1343Ignition Coil Output Stage 2 Short To Ground
P1345Ignition Coil Output Stage 3 Short To Ground
P1354Modulating Piston Displacement Sensor Electrical Circuit Malfunction
P1386Internal Control Module Knock Control Error
P1387Control Unit Internal Altitude Sensor
P1391CMP Sensor Bank 2 Short To Ground
P1392CMP Sensor Bank 2 Open Circuit/Short To Positive
P1393Ignition Coil Power Output Stage 1 Malfunction
P1394Ignition Coil Power Output Stage 2 Malfunction
P1395Ignition Coil Power Output Stage 3 Malfunction
P1401EGR Valve Power Stage Short To Ground
P1402EGR Vacuum Regulator Solenoid Valve Short To Positive P1403EGR System Control Difference
P1407EGR Temperature Sensor Signal Too Low
P1408EGR Temperature Sensor Signal Too High
P1410Tank Ventilation Valve Circuit Short To B+ P1420Secondary Air Injection Control Module Electrical Malfunction P1421Secondary Air Injection Valve Circuit Short To Ground P1422Secondary Air Injection Valve Circuit Short To B+ P1424Secondary Air Injection System Bank 1 Leak Detected P1425Tank Ventilation Valve Short To Ground P1426Tank Ventilation Valve Open Circuit P1432Secondary Air Injection Valve Open P1433Secondary Air Injection Pump Relay Circuit Open P1434Secondary Air Injection Pump Relay Circuit Short To Positive P1435Secondary Air Injection Pump Relay Circuit Short To Ground P1436Secondary Air Injection Pump Relay Circuit Electrical Malfunction P1440EGR Valve Power Stage Open P1441EGR Vacuum Regulator Solenoid Valve Open/Short To Ground P1450Secondary Air Injection System Circuit Short To Positive P1451Secondary Air Injection Circuit Short To Ground P1452Secondary Air Injection System Circuit Open P1471EVAP Control System LDP Circuit Short to Positive P1472EVAP Control System LDP Circuit Short To Ground P1473EVAP Control System LDP Open Circuit P1475EVAP Control System LDP Malfunction/Signal Circuit Open P1476EVAP Control System LDP Malfunction/Insufficient Vacuum P1477EVAP Control System LDP Malfunction P1478EVAP Control System LDP Clamped Tube Detected P1500Fuel Pump Relay Electrical Circuit Malfunction P1501Fuel Pump Relay Circuit Short To Ground P1502Fuel Pump Relay Circuit Short To Positive P1505Closed Throttle Position Does Not Close/Open Circuit P1506Closed Throttle Position Switch Does Not Open./Short To Ground P1512Intake Manifold Changeover Valve Circuit Short To Positive P1515Intake Manifold Changeover Valve Circuit Short To Ground P1516Intake Manifold Changeover Valve Circuit Open P1519Intake Camshaft Control Bank 1 Malfunction P1522Intake Camshaft Control Bank 2 Malfunction P1537Fuel Cut-off Valve Incorrect Function P1538Fuel Cut-off Valve Open/Short To Ground P1539Clutch Pedal Switch Signal Fault P1540VSS Signal Too High P1541Fuel Pump Relay Circuit Open P1542Throttle Actuation Potentiometer Range/Performance P1543Throttle Actuation Potentiometer Signal Too Low P1544Throttle Actuation Potentiometer Signal Too High
P1545Throttle Position Control Malfunction P1546Wastegate Bypass Regulator Valve Short To Positive P1547Wastegate Bypass Regulator Valve Short To Ground P1548Wastegate Bypass Regulator Valve Open P1549Wastegate Bypass Regulator Valve Open/Short To Ground P1550Charge Pressure Control Difference P1555Charge Pressure Upper Limit Exceeded P1556Charge Pressure Negative Deviation P1557Charge Pressure Positive Deviation P1558Throttle Actuator Electrical Malfunction P1559Idle Speed Control Throttle Position Adaption Malfunction P1560Maximum Engine Speed Exceeded P1561Quantity Adjuster Control Difference P1562Quantity Adjuster Upper Stop Value P1563Quantity Adjuster Lower Stop Value P1564Idle Speed Control Throttle Position Low Voltage During Adaption P1565Idle Speed Control Throttle Position Lower Limit Not Obtained P1568Idle Speed Control Throttle Position Mechanical Malfunction P1569Switch For CCS Signal Faulty P1580Throttle Actuator B1 Malfunction P1582Idle Adaptation At Limit P1600Power Supply Terminal No. 15 Low Voltage P1602Power Supply Terminal No. 30 Low Voltage P1603Internal Control Module Self Check P1606Rough Road Spec. Engine Torque ABS-ECU Electrical Malfunction P1611MIL Call-Up Circuit/TCM Short To Ground P1612Engine Control Module Incorrect Coding
P1613MIL Call-Up Circuit Open/Short To Positive P1616Glow Plug Indicator Lamp Short To Positive P1617Glow Plug Indicator Lamp Open/Short To Ground P1618Glow Plug Relay Short To Positive P1619Glow Plug Relay Open/Short To Ground P1624MIL Request Signal Active P1626Data Bus Drive Missing Command From M/T P1630Accelerator Pedal Position Sensor 1 Signal Too Low P1631Accelerator Pedal Position Sensor 1 Signal Too High P1632Accelerator Pedal Position Sensor 1/2 Supply Voltage P1633Accelerator Pedal Position Sensor 2 Signal Too Low P1634Accelerator Pedal Position Sensor 2 Signal Too High P1639Accelerator Pedal Position Sensor 1/2 Range Performance P1640Internal Control Module (EEPROM) Error P1648CAN-Bus System Component Failure P1649Data Bus Powertrain Missing Message From Brake Controller P1676Drive By Wire MIL Circuit Electrical Malfunction P1677Drive By Wire MIL Circuit Short To Positive P1678Drive By Wire MIL Circuit Short To Ground P1679Drive By Wire MIL Circuit Open Circuit P1681Control Module Programming Not Finished P1686Control Unit Error, Programming Error P1690MIL Malfunction P1691MIL Open Circuit P1692MIL Short To Ground P1693MIL Short To Positive P1778Solenoid EV7 Electrical Malfunction P1780Engine Intervention Readable P1851Data Bus Drive Missing Command From ABS P1854Drive Train CAN-Bus Inoperative

Read more at: https://www.obd-codes.com/trouble_codes/volkswagen/
Copyright OBD-Codes.com

Apr 03, 2012 | Volkswagen Passat Cars & Trucks

1 Answer

No heat, one flash says limit circuit open on my furnace


If your limit circuit open it is an indication of either a power surge opening the circuit OR that your furnance has another problem and the limiter opened because of it. You can buy and replace the limit circuit, but if it opens right away, you will need to go further into your furnace.

Jan 16, 2012 | Frigidaire Dryers

1 Answer

Primary limit circuit open code


A primary limit circuit sounds like a thermal limiter. Unplug the unit, open it up and start measuring continuity across all devices leading up to the burner. You will find something open or not connected.

Mar 02, 2011 | Heating & Cooling

1 Answer

Power windows wont work what fuses can i check i have replaces the driverside switch.


Fuses, Switches, Circuit Breakers And Relays
Check under hood and under the dash driver's side.
There may be a sticker on the inside of the panel cover that tells you the legend. Otherwise, it requires testing each and every one of those fuses, preferably with a fuse tester that can do it more expediently than pulling each one out and looking for a broken conductor.


Most vehicles use one or more fuse panels. This one is located on the driver’s side kick panel tcca6p01.jpg

It is possible for large surges of current to pass through the electrical system of your vehicle. If this surge of current were to reach the load in the circuit, this surge could burn it out or cause severe damage to the vehicle’s electrical system. It can overload the wiring, causing the harness to get hot and melt the insulation. To protect vehicle wiring, fuses, circuit breakers and/or fusible links are typically installed into the power supply wires throughout the electrical system. These items are nothing more than a built-in weak spot in the system. When an excessive amount of current flows through a circuit it causes an increase in heat throughout the wiring. Fuses and circuit breakers are designed as the weak link in the system and will disconnect the circuit to prevent damage to the components contained within that circuit. Components are equipped with connectors so they may be replaced in situations where they were damaged due to a power surge.
The following are descriptions as to how fuses and circuit breakers protect the electrical system:
  • Fuse- A fuse is a weak link in the system designed to create an open circuit when the amperage flowing through that circuit exceeds the limits of the fuse. As the amperage increases, the conductor within the fuse heats up and eventually melts and breaks apart. This open circuit interrupts the flow of current and protects the components in the circuit.
  • Circuit Breaker- A circuit breaker is a "self-repairing" fuse. It will open the circuit in the same fashion as a fuse. The surge creates heat the same way that a fuse is affected. When the surge subsides and the circuit cools down, the circuit breaker will reset and allow current to flow through the circuit. Typically circuit breakers do not need to be replaced.
  • Fusible Link- A fusible link (fuse link or main link) is a short length of special, high temperature insulated wire that acts as a fuse. When an excessive electrical current passes through a fusible link, the thin gauge wire inside the link melts, creating an open to protect the circuit. To repair the circuit, the link must be replaced. Some newer type fusible links are housed in plug-in modules, which are simply replaced like a fuse, while older type fusible links must be cut and spliced if they melt
CAUTION
Always replace fuses, circuit breakers and fusible links with identically rated components. Under no circumstances should a protection device of higher or lower amperage rating be substituted.
Switches Switches are used in electrical circuits to control current flow. The most common use of relays and switches is to open and close circuits between the battery and various electrical loads in a circuit. loads are rated according to the amount of amperage they can handle. All of the current that the controlled load uses flows through a switch. Using a switch with an amperage rating lower than what the circuit is rated for could overload and cause damage to the components located on that circuit. Relays
The underhood fuse and relay panel contains fuses, relays, flashers and fusible links tcca6p02.jpg

Relays are used to control high-current loads with lower currents. Since these some loads require a large amount of current, the thickness of the wire in the circuit is also greater. If a switch were used to control the circuit, all of the current required to power the high-current load would have to pass through the switch. From a design standpoint, relays are used to limit current through switches and reduce the amount of heavy gauge wiring in the vehicle.
Relays are constructed of a set of switch contacts and a small electro-magnetic coil. When current flow through the coil a magnetic field is created. This field causes the contacts to touch, in turn completing the high-current circuit. Typically, relays are constructed so that the secondary contacts are open when the relay is de-energized (turned off). Circuits where relays are used include, but are not limited to, the horns, headlights, starter motor, electric fuel pump, blower motor and cooling fan motor.
Relays are composed of a coil and a set of switch contacts. The large wires connect a high current power source to one side of the relay switch contacts and from the other side of the relay switch contacts to the load. The smaller wires connect a low current power source to the relay control coil and from the control coil to the control switch and then to ground. tcca6g02.gif

Load Every electrical circuit must include a "load'' (something to consume voltage from the power source). Loads are resistances included in circuits to limit current flow. Loads are the components installed in circuits, such as headlights, wiper motors, door lock solenoids. Without a load, the battery would flow all of its energy through a circuit directly to ground. This is called a "dead-short to ground". The unchecked flow of electricity would cause a great amount of damage to the circuit by developing a tremendous amount of heat. Short circuits can develop sufficient heat to melt the insulation of surrounding wires, even reducing a multiple wire cable to a lump of plastic and copper.

Jul 26, 2010 | 2001 Ford Taurus

1 Answer

Dryer does not start


Check the fuse on the blower housing.
To get to the heating element on most of these dryers you remove the back dust cover: whirlpool%20dryer.jpg 1. Hi Limit (small limit upper right hand side of this pic) the most frequent problem if dryer RUNS but no heat. 2. Heater assembly. 7. Control thermostat(s). 5. Fuse(350F), if blown(open) the dryer will NOT run. 4. Heater element.

Sep 13, 2009 | Dryers

1 Answer

My dryer causes the breaker to trip


What type of circuit breaker is there? Is it a GCFI (ground fault interrupter)? In that case, you should check for any water near the dryer that would cause an open circuit. Is the circuit breaker rated appropriately for the dryer's load on the circuit? With a circuit tester, you can check for a wiring fault.

I hope these ideas give you a starting place. If the wiring is good, the motor on the dryer is the source of the short. (My knowledge is limited on whether that would be a user fixable issue.)

Cindy Wells

Cindy Wells

Sep 08, 2009 | Kenmore Dryers

1 Answer

I have a 2000 Nissan Xterra SE V6. My center


Before you begin to diagnose and test the stop light system (that's what's it's called in the service manual), you should look at the following
wiring diagram to try and understand how the system work. This will help you to logically walk through the diagnosis process.

d660eb1.jpg
TESTING FOR “OPENS” IN THE CIRCUIT

7c178f9.jpg

Continuity Check Method
The continuity check is used to find an open in the circuit. The
Digital Multimeter (DMM) set on the resistance function will indicate
an open circuit as over limit (no beep tone or no ohms symbol).
Make sure to always start with the DMM at the highest resistance
level.
To help in understanding the diagnosis of open circuits please refer
to the schematic above.
1) Disconnect the battery negative cable.
2) Start at one end of the circuit and work your way to the other
end. (At the fuse block in this example)
3) Connect one probe of the DMM to the fuse block terminal on
the load side.
4) Connect the other probe to the fuse block (power) side of SW1.
Little or no resistance will indicate that portion of the circuit has
good continuity. If there were an open in the circuit, the DMM
would indicate an over limit or infinite resistance condition.
(point A)
5) Connect the probes between SW1 and the relay. Little or no
resistance will indicate that portion of the circuit has good continuity.
If there were an open in the circuit, the DMM would
indicate an over limit or infinite resistance condition. (point B)
6) Connect the probes between the relay and the solenoid. Little
or no resistance will indicate that portion of the circuit has good
continuity. If there were an open in the circuit, the DMM would
indicate an over limit or infinite resistance condition. (point C)
Any circuit can be diagnosed using the approach in the above
example.

Voltage Check Method
To help in understanding the diagnosis of open circuits please refer
to the previous schematic.
In any powered circuit, an open can be found by methodically
checking the system for the presence of voltage. This is done by
switching the DMM to the voltage function.
1) Connect one probe of the DMM to a known good ground.
2) Begin probing at one end of the circuit and work your way to
the other end.
3) With SW1 open, probe at SW1 to check for voltage.
voltage; open is further down the circuit than SW1.
no voltage; open is between fuse block and SW1 (point A).
4) Close SW1 and probe at relay.
voltage; open is further down the circuit than the relay.
no voltage; open is between SW1 and relay (point B).
5) Close the relay and probe at the solenoid.
voltage; open is further down the circuit than the solenoid.
no voltage; open is between relay and solenoid (point C).
Any powered circuit can be diagnosed using the approach in the
above example.

TESTING FOR “SHORTS” IN THE CIRCUIT

To simplify the discussion of shorts in the system please refer to
the schematic below.
c2ba473.jpg

Resistance Check Method
1) Disconnect the battery negative cable and remove the blown
fuse.
2) Disconnect all loads (SW1 open, relay disconnected and solenoid
disconnected) powered through the fuse.
3) Connect one probe of the ohmmeter to the load side of the fuse
terminal. Connect the other probe to a known good ground.
4) With SW1 open, check for continuity.
continuity; short is between fuse terminal and SW1 (point A).
no continuity; short is further down the circuit than SW1.
5) Close SW1 and disconnect the relay. Put probes at the load
side of fuse terminal and a known good ground. Then, check
for continuity.
continuity; short is between SW1 and the relay (point B).
no continuity; short is further down the circuit than the relay.
6) Close SW1 and jump the relay contacts with jumper wire. Put
probes at the load side of fuse terminal and a known good
ground. Then, check for continuity.
continuity; short is between relay and solenoid (point C).
no continuity; check solenoid, retrace steps.

Voltage Check Method
1) Remove the blown fuse and disconnect all loads (i.e. SW1
open, relay disconnected and solenoid disconnected) powered
through the fuse.
2) Turn the ignition key to the ON or START position. Verify battery
voltage at the battery + side of the fuse terminal (one lead
on the battery + terminal side of the fuse block and one lead
on a known good ground).
3) With SW1 open and the DMM leads across both fuse
terminals, check for voltage.
voltage; short is between fuse block and SW1 (point A).
no voltage; short is further down the circuit than SW1.
4) With SW1 closed, relay and solenoid disconnected and the
DMM leads across both fuse terminals, check for voltage.
voltage; short is between SW1 and the relay (point B).

GROUND INSPECTION

Ground connections are very important to the proper operation of
electrical and electronic circuits. Ground connections are often
exposed to moisture, dirt and other corrosive elements. The corrosion
(rust) can become an unwanted resistance. This unwanted
resistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper
grounding. A loose or corroded ground can drastically affect an
electronically controlled circuit. A poor or corroded ground can easily
affect the circuit. Even when the ground connection looks clean,
there can be a thin film of rust on the surface.
When inspecting a ground connection follow these rules:
1) Remove the ground bolt or screw.
2) Inspect all mating surfaces for tarnish, dirt, rust, etc.
3) Clean as required to assure good contact.
4) Reinstall bolt or screw securely.
5) Inspect for “add-on” accessories which may be interfering with
the ground circuit.
6) If several wires are crimped into one ground eyelet terminal,
check for proper crimps. Make sure all of the wires are clean,
securely fastened and providing a good ground path. If multiple
wires are cased in one eyelet make sure no ground wires have
excess wire insulation.

c907e9d.jpg
moz-screenshot-4.pngmoz-screenshot-5.png

Apr 06, 2009 | 2000 Nissan Xterra

2 Answers

Intertherm Furnace Will not stay on


possible dirty air filter low air flow causing high temp in fire box to trip limit switch or fan motor is bad hope this help let me know if you if this solved problem I may need more info

Jan 04, 2009 | Intertherm P3RA-048K Air Conditioner

1 Answer

Intertherm Furnace Will not stay on


Your furnace is likely getting too hot check your filter. make sure the fan is running. if you have weak air flow you may have a blocked heat transfer coil. you should have your heating and cooling system serviced yearly by a qualified company to inspect and test equipment.

Jan 04, 2009 | Intertherm Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

153 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

2557 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...