Question about Heating & Cooling

1 Answer

Goodman heat strip when t stat switched to call for heat the heat strip won't come on n it flashes on the stat calling for heat n never come on only cool air

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Legend:

    An expert who has written 200 answers of more than 400 characters.

  • Expert
  • 484 Answers

Is this a heat package inside a Goodman air handler? If so, it is probably at least a 10kw (two element) unit and it sounds like the first stage is not coming on. Of course it could also be a 15 or 20 kw heat package with multiple heat stages, I have no way of knowing.

Sometimes the second and subsequent heating elements operate off of the 'sequencer' of the previous stage. Not always though. If its a regular furnace it should have a terminal strip with R W G Y and C on it. With the thermostat calling for heat, check for voltage (hopefully you have at least a cheap DVOM) between W and C. If 24 vac is present, find the first stage sequencer by looking at the schematic on the air handler door. Follow the wire on W1 in the diagram to the sequencer. After locating the sequencer, check for voltage across the coil....which should be the same as W and C. If there is 24vac there and it has been there for 45 seconds, the sequencer switch should be closed which then energizes the heating element. Without an 'amprobe' (clamp on ammeter) it is difficult to determine if current is flowing through the heating element.

If you can verify that the first stage element now has 240 volts across it, but there is still no heat about all you can do is turn off the power ---------- (IMPORTANT!!!!!!)-------- and remove the high voltage wire from one end of the element and use an ohmmeter (if you are lucky enough to have one) to verify that the heating element is in fact good or not. Resistance shown on the ohmmeter shows it to be good, no resistance shows it to be open and possibly the culprit.

Of course in series with the element is always a 'high temperature cut out' that could be causing the element to not heat. The same technique is used to check and verify each sequencer and element in the furnace. Its a whole lot easier if you have an amprobe.

Remember you are in a high voltage environment which is very dangerous to the untrained individual. Do not attempt this if you are nervous around electricity !!!!!

There is a whole lot more than can be written in a concise manner but this may get you in the ballpark....
You should befriend an HVAC guy.....


Posted on Nov 23, 2014

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 232 Answers

SOURCE: "cool on " flashing..no heat or cool air blowing

when its flashing its in a 5 min delay mode if you wait 5 min and still flashing you may need a new stat. but give it a full 5 min.

Posted on Sep 20, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Goodman gph1348m41ac unit is blowing cool air in heat mode with mid 30s ambient outdoor temp. I turn it off then on and will usually blow warm air but this cycle is becoming more repetitive. any expert...


A heat pump on the optimal heating day (about 50 degrees ambient) will only deliver approximately 85 degree air as compared to 125 degree air from a fossil fueled furnace. The colder the outdoor air is the less heat there is available to be transferred to the living space. At 30 degrees, the heat transfer capability is getting close to negligible meaning the run cycles will be approaching continuous and eventually as the heat pump along cannot maintain setpoint, the outdoor stat or stats will bring on auxilliary heat in the air handler.

If your ambient temp is below the 'balance point' of the heat pump, the house temp will drop a little lower and most times energize the heat strips through the outdoor t-stat. Your outdoor stat could be set too low for the heat pump to carry the structure all the way down to the balance point so when you turn it off and back on, the lower indoor temp automatically brings on the heat pump plus a heat strip or two, thus the warmer air. Second stage on the stat satisfies due to the heat strip, drops them out of the circuit and the heat pump is left running on first stage heat delivering the perceived cold air.

Your outdoor stat could also be not functioning correctly and not allowing the heaters to come on until the system is turned back on reestablishing the two stage call for heat.

Tons of possibilities and not enough room to list....

Jan 01, 2015 | Goodman Manufacturing Goodman GPH1348M41 4...

1 Answer

5 ton goodman package unit not coming on


If you look on the install manual. It says it will work for a heat pump without backup heat. No heat strips.........If you do not have strips the guide says as follows

"PLACE A JUMPER (PIECE OF WIRE) BETWEEN Y AND W IF YOU ARE USING A HEAT PUMP WITHOUT AUXILIARY/BACKUP HEAT." if this dosnt work check the fuse in the air handler you may have blown it if you did not turn the unit off before installing.

Mar 25, 2014 | Goodman Heating & Cooling

1 Answer

Heating elements on Goodman AFUE 60 air handler not getting energized


t-stat, heat sequencer bad, fuse links on strips,or wire terminal issues.

Jan 21, 2014 | Goodman Heating & Cooling

1 Answer

My thermostat clicks,but heat won,t come on


The t-stat is only a switch, it doesn't provide heat. Please provide information as to what kind of heat (gas, oil, heat pump) as well as what the heating unit is or isn't doing.

Dec 03, 2013 | Goodman CLQ30AR32 Air Conditioner

1 Answer

Air and strips work but heat won't


Check that the reversing valve is not stuck. TAP on it with the plastic end of a screw driver while the system is calling for 1st stage heat. Check low voltage wiring at outdoor unit from t-stat.

Nov 08, 2013 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Heat strips won't work anymore


Turn t-stat to emergency heat and see if heat works then if not check circuit breaker if thats ok you may have a bad sequencer or relay

Dec 26, 2008 | Goodman GMS90703BXA Heater

1 Answer

Intertherm air conditioner split unit


you need to know if the heat strips are energized by a contactor or relay as opposed to a heat sequencer. as a general rule the contactor or relay clicks shut as soon as a call for heat is made and the fan is energized by the stat at the same time . instant heat strips and instant fan. if the heat strips have a sequencer it may take up to 90 seconds or so before the sequencer heats up then clicks and puts power to the strips and the fan motor at the same time. the high voltage usually feeds from the strip side of the sequencer through the normally closed side of the fan relay. if you changed the stat and didn't switch the fan setting switch to elec, the fan will not be energized by the stat. if it is in the gas position, you have told it that the sequencer is bringing on the fan and of course it won' t if you don't have a sequencer.. this is tough stuff to trace even for an experienced pro cause its interconnected so dual fan speeds can't be energized at the same time. most likely you have a new digital stat that was not programmed correctly to bring fan on in heat. good luck

Nov 12, 2008 | Intertherm Heating & Cooling

2 Answers

MY HEAT PUMP SYSTEM WILL NOT WORK IN EMERGENCY MODE


the thermostat sub base has a place to connect a wire usually white to energize the heat strips when you push the stat way hotter than the house temp. that is why the strips come on in normal heat. it also has a terminal that is only energized in emergency heat and it also should have a wire connected to it so that terminal can supply power to the strips when the stat is switched into emerg heat . you can identify the terminal from the wiring diagram and if need be jumper w2 wire over to the aux terminal and it will work. they both go back into the airhandler and power the same strips. w2..................................................................................................w2 in airhandler to strips or w2...jumper to aux......................................................................................................................w2 in airhandler to strips.

Nov 10, 2008 | Amana PTH123B25AJ Heat Pump Air...

1 Answer

Wiring diagam for goodman heatpump and air handler to thermostate


On your t-stat you have Y, W1, W2, R, O, G, B or C or X. Y is your cooling circuit and will be the same in the air handler and heat pump unit, use the yellow wire for this circuit. W1 and W2 are your back up elec. or gas heat. Depending on how many kws or heat strips you have and t-stat wires you will put the white wire to W1 in both the t-stat and air handler. W2 is for your second stage back up heat if air handler calls for it, this will be a tan or brown or black t-stat wire and goes to W2 on t-stat and air handler. R is half of your 24v control power from the transformer and is the red wire and goes to the t-stat, air handler, and heat pump. O is for the reversing valve in the heat pump that switches it from heating and cooling. You guessed it the orange wire connect to t-stat and heat pump. G is for the blower and is the green wire to the t-stat and air handler. B or C or X is known as the common which is the other half of control circuit from 24v transform it is the blue wire and goes to the t-stat, air handler, and heat pump.





Oct 09, 2008 | Goodman Heating & Cooling

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

Related Topics:

77 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

2550 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...