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Carrier 8000 ts - code 24 - secoundary voltage fuse is open - check for short circuit in secoundary voltage wiring (24 vac) wiring Whats my steps to fix problem. Thx

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On the outside of A/C is a condenser there are little thermostat wires going to turn on the outside unit. If those wires have the insulation cracking and breaking off then the wires touch each other instant short. Might have to take the cover off the electrical area of condenser and inspect the two wire going into the cabinet. Be sure you turn off breaker to outside unit. If the wires are touching you can check real quick if you have a volt ohm meter ohm out the two wire without them being connected to anything. If you get a reading along the way they are touching somewhere. Might be easier to replace the two wire from the furnace connection to the condenser. You can use two wire three or four but use only two of them. And the same color.

Posted on Nov 26, 2008

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1 Answer

Where is the low voltage 24 vac transformer located?


The transformer is located in the furnace. You might want to check to make sure the furnace door is on correctly brcause theres a swich that will open for safety . Also some have a fuse on the solid state board.

May 26, 2014 | Rheem RASL024JEC-RHPNHM2421JC 2 Ton 18.50...

1 Answer

Thermostat is new but no 24 vac at contactor


If you are handy with meters and electrical work try this.
Somewhere there is a small transformer that supplies the 24volts.
If you trace the wires from the contactor coil back to the big circuit board then the transformer is probably on that board. Make sure you are tracing the COIL wires. If the wires go to a small transformer mounted separately then your in luck. That transformer steps down the voltage to 24 volts used as a "control" voltage for the unit. If you have 24vac output at the transformer, and no 24vac at the contactor then a control or thermostat circuit is open.

Jul 11, 2012 | American Standard Air Conditioners

1 Answer

3 amp fuse blows when ac is switched on. Heater works fine.


There is a short in the low voltage wires somewhere for sure. The most common place is the low voltage on the outside unit, sometimes animals chew through them or they get cut with a weed eater. Just my experience. You basically have to trace it back all the way to the thermostat and heater. The only other thing is the contactor

Jun 30, 2012 | Carrier 38CKC060 Air Conditioner

1 Answer

What are the carrier 8000ts led error codes?


They are listed inside the front panel of the main unit.

LED CODE

EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST

DIGIT DETERMINED BY THE NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY

THE NUMBER OF LONG FLASHES.

STATUS

11 NO PREVIOUS CODE - Stored status code is erased automatically after 72

hours. On RED LED boards stored status codes can also be erased when power

(115 VAC or 24 VAC) to control is interrupted.

12 BLOWER ON AFTER POWER UP (115 VAC or 24 VAC) -Blower runs for 90

seconds, if unit is powered up during a call for heat (R-W closed) or R-W opens

during blower on-delay.

13 LIMIT CIRCUIT LOCKOUT - Lockout occurs if the limit or flame rollout switch is

open longer than 3 minutes.

- Control will auto reset after three hours. - Refer to #33.

14 IGNITION LOCKOUT - Control will auto-reset after three hours. Refer to #34.

21 GAS HEATING LOCKOUT - Control will NOT auto reset.

Check for: - Mis-wired gas valve -Defective control (valve relay)

22 ABNORMAL FLAME-PROVING SIGNAL - Flame is proved while gas valve is

de-energized. Inducer will run until fault is cleared. Check for:

- Leaky gas valve - Stuck-open gas valve

23 PRESSURE SWITCH DID NOT OPEN Check for:

- Obstructed pressure tubing. - Pressure switch stuck closed.

24 SECONDARY VOLTAGE FUSE IS OPEN Check for:

- Short circuit in secondary voltage (24VAC) wiring.

31 PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open longer than

five minutes, inducer shuts off for 15 minutes before retry. Check for:

- Excessive wind - Proper vent sizing - Defective inducer motor

- Low inducer voltage (115VAC) - Defective pressure switch

- Inadequate combustion air supply - Restricted vent

- Disconnected or obstructed pressure tubing

- Low inlet gas pressure (if LGPS used)

If it opens during blower on-delay period, blower will come on for the selected

blower off-delay.

33 LIMIT CIRCUIT FAULT - Indicates a limit, or flame rollout is open. Blower will

run for 4 minutes or until open switch remakes whichever is longer. If open

longer than 3 minutes, code changes to lockout #13. If open less than 3 minutes

status code #33 continues to flash until blower shuts off. Flame rollout switch

requires manual reset. Check for: - Restricted vent

- Proper vent sizing - Loose blower wheel - Excessive wind

- Dirty filter or restricted duct system.

- Defective blower motor or capacitor. - Defective switch or connections.

- Inadequate combustion air supply (Flame Roll-out Switch open).

34 IGNITION PROVING FAILURE - Control will try three more times before lockout

#14 occurs. If flame signal lost during blower on-delay period, blower will come

on for the selected blower off-delay. Check for: - Control ground continuity

- Flame sensor must not be grounded

- Oxide buildup on flame sensor (clean with fine steel wool).

- Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal).

- Gas valve defective or gas valve turned off - Manual valve shut-off

- Defective Hot Surface Ignitor

- Low inlet gas pressure

- Inadequate flame carryover or rough ignition

- Green/Yellow wire MUST be connected to furnace sheet metal

45 CONTROL CIRCUITRY LOCKOUT Auto-reset after one hour lockout due to;

- Gas valve relay stuck open - Flame sense circuit failure

- Software check error

Reset power to clear lockout. Replace control if status code repeats.

If status code recall is needed, briefly remove then reconnect one main limit wire to display

stored status code. On RED LED boards do not remove power or blower door before initiating

status code recall. After one status code recall is completed component test will occur.


Thanks for Choosing FixYa.


Kelly

Oct 05, 2010 | Air Conditioners

1 Answer

No output voltage on circuit board terminals 1,2,3,and 4.


I think those are your thermostat connections and are probably 24 vac. Check the output of the transformer and make sure it is 24 vac. If it isn't make sure power is supplied to the input of the transformer.

May 02, 2010 | LG LS-L1210CL Mini Split Air Conditioner

2 Answers

I have a Carrier Weathermaker 8000 furnace. it will not light.I tested the igniter on my upstairs furnace and it will glow and light that furnace. I can manualy light the furnace with a match. flame sensor...


If you're sure the igniter is good and the controller is sending voltage to gas valve to open, but not to the igniter then, yes, the controller is bad. The only way to know for sure is to remove the igniter's molded plug from the board and test voltage directly at the board. You should get about 100-120 vac to the igniter.

Mar 25, 2010 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

How to test for 24 vac between R and C


Yes you are right the control voltage of your furnace is 24 volts. Really without a load on the transformer usually runs 28 volts then you put a load on it and it drops down to 24-26 volts. Check the voltage between the R terminal and the W terminal with the selector switch in heat mode. Or move the thermostat switch to heat. R to C would do it also. You could also do the voltage check right at the transformer one side of the transformer is 120 volts and the other side is 24. Look for the black and white wires that is the 120 volt side the blue and yellow or off colors is the secondary side.

Now if it checks low say 24 or 22 your gas valve needs min. 24 volts to hold open the valve that allows the gas to flow into the burners. So if one of the symptoms is related to burners come on for about 3 to 5 min. then shut down and the fan keeps going it is loosing the necessary voltage to hold open the gas valve.

One more thing make sure the air filter is clean as this will cause the heat to build up in the heat exchanger and hit the high limit safety device and cut the gas off. Until the air cools enough to allow the high limit to reset then the gas valve will open and start the process all over again. Dirty A-Coil will do the same thing as the air goes through the coil to get to house. let me know how it goes ken

Jan 18, 2009 | Air Conditioners

1 Answer

Blower runs, Ignitor glows, no 24V at gas valve, no click....


Check the two wires coming directly off the transformer. They will be connected to the board the line voltage will be black and white and the 24voltage will be something like blue and red undo from board and check to see if you have 24 volts there. If not your transformer is bad 10 dollar part. Take it to Heating and Air parts house to replace. Let me know ken

Dec 13, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

Thermostat transformer 3amp fuse blows on carrier weathermaker 8000


I have the same problem with my Goodman compressor. I removed the relay so the wires that control the relay on the compressor are open circuit. They are, and the fuse no longer blows. There must be something wrong with the relay. The resistance on the 24 volt coil seems a little low, but it is not a dead short. I thought the wires might be shorted, but removing the relay would not have fixed the blowing fuse if that was the problem.

Jul 30, 2008 | Air Conditioners

1 Answer

I have a Carrier 38tra048340 ac 4 ton unit outside, heater in attic. Thermostat is Totaline P374-1100. Power went out than back on after a few hours due to vehicle crashing into power pole. AC was running...


Blank screen sounds like a fried thermosat. Abrupt outages can affect certain types of thermostats. Make a jumper wire and jump across R and G. See if you get any action from anywhere. If a fan or compressor kicks in you know you have a burned out thermosat...

Jun 23, 2008 | Carrier Air Conditioners

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