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Why does my goodman heat pump blows cool air when heater is on?

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6 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

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Posted on Jan 02, 2017

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hotuna
  • 288 Answers

SOURCE: Honeywell thermostat....Home cooling/heating system....Chromotherm III

On heat pumps, the normal setting is simply an air conditioner working in reverse. The EMT or AUX heat is a supplemental heating system using electric heating elements instead of the hermetic (compressor) system. As far as why the regular heat does not work it can be one of many things. low freon charge. reversing valve not functioning. The defrost cycle not working. Take your pick. you may want to call a service man to repair it as the electric (EMT) is not as efficient.

Posted on Nov 04, 2007

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Therinnaiguy
  • 1420 Answers

SOURCE: goodman heater

OK, we will need to perform a simple test of the furnace to see exactly what is going on. Set your thermostat to 10 degrees higher than you normally do so we know that there is a call for heat. Then at the furnace, there will ba a small viewing port. Watch the blinking light and record all the patterns it blinks. After a minute or so, place your hand on the PVC vent pipe(s) to see if they are warm. If not, either the thermostat is not sending a signal to the furnace or we will need to look inside the furnace to see what is happening. But if one of the PVC pipes is getting warm, place your hand on the plenum on top of the furnace connected to the ductwork. You shoul feel the metal starting to get warm. If the blower does not turn on within two minutes, there is an issue with either the blower itself or the control board.

Getting back to if one of the vent pipe(s) don't get warm. Using a piece of duct tape or electrical tape, after removing the furnace access panel, tape the door safety switch down. The furnace will now try and cycle. A small fan attached to the vent pipe should run, then it will create suction on a pressure switch that will energize the ignitor. You will notice an orange glow thru a larger viewing port looking into the burner box. After a few seconds, the gas valve will open and the ignitor will ignite the gas. The orange glow will turn to a blue flame. Now after two minutes or less, the blower should turn on. If one of these steps don't happen, you should document it and let your technician know. As far as the blinking lights, these are diagnostic codes that will tell you where to look for the issue. On the rerverse of the access panel, there is a chart that gives a simple explanation of what the blinking represents. Again, let your technician know what you discovered. Keep in mind that the furnace will cycle or attempt to start 3 times before it will blink an error code.

Remove the tape and reassemble the access panel. Yes you will need to contact your technician but the steps you performed just saved you 30-40 minutes of diagnostic time.

Posted on Nov 26, 2007

yalmer
  • 549 Answers

SOURCE: Rinnai monitor heater 1004F

http://www.rinnai.us/Rinnai.aspx/FileLib

hope this helps

Posted on Feb 13, 2008

benmartinez
  • 1 Answer

SOURCE: Heat pump that just blows cool air

I have a Honeywell heater i'll set my thermostat to 76 and ill turn on the heater and it would turn on... but when it get to 76 it turns off so when the temperature drops down and the heater clicks back on all i get is cold air .. it only works on the 1st time what to do ?

Posted on Dec 24, 2008

aries_67
  • 1 Answer

SOURCE: 1993 goodman status light 4 times blinking

I have a goodman GMP075-3 that won't turn on. I think it is the pressure switch since I do not have a vent blockage. What is a venter and where can I find it??

Posted on Dec 30, 2008

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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

Goodman heating system


It really depends on the type of system you have. You will either have a furnace, high efficiency furnace, heat pump system, heat pump with gas or electric back up heat. All these systems operate differently and the problem that you are having could be caused by multiple issues, depending on which system it is. More info will be greatly appreciated. Make sure to check all filters and air flow first before going any further. The system could be over heating and tripping a limit, causing the system to stop producing heat until the unit has cooled back down.

Dec 06, 2013 | Heating & Cooling

1 Answer

The coil outside is 45 degrees but the air blowing in the house doesnt feel cool


Is this a heat pump? If so it sounds like a stuck reversing valve.
Sometimes cycling the thermostat between heat and cool will free it.

Jul 23, 2010 | Goodman CKL42AR42 Air Conditioner

1 Answer

Goodman heat pump stopped cooling


yes, but I would try a "hard-start" kit before replacing the compressor itself

Jul 10, 2010 | Goodman CPLE24-1 Air Conditioner

1 Answer

I have a 3 ton goodman heat pump warm air is delivered from all the vents except for two which blows cool to cold air . help me , freezing im both bedrooms


if these are the longest runs from the air handler this can sometimes happen ,about the easest solution is to install a in duct heater into the duct feeding the rooms this is basically a set of electric coils installed in duct to re-heat the air going to the bed room

Jan 08, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

I have a goodman ac/heat pump....worked fine last season...now only blows cold air, even in heat setting....help! thanx


Heat Pumps are not famous for being fast heaters. Give it some time to act. Is yours extracting heat from the air or from a water source. If from the outside air, consideration must be given to the temp of the outside air. It takes longer to warm as the temp outside drops.

Yours could be a different problem of course, but let it have a chance to work before you call the repairman.

Dec 12, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Cool turned down to 65 and it is still 81 in the house


to see if the compressor is running feel your line set the liquid line
(small line) should feel like there is fluid flowing though it, you can also disconnect the o/d fan briefly if you want to be certain the compressor is running, it best however to get a meter and amp clap to do a proper diagnosis, you are limited to your tools as well as your knowledge, call an NATE certified professional.

May 24, 2009 | Goodman GMS90703BXA Heater

1 Answer

Goodman heats but defrosts turns on before desired temp.


Yes. The defrost cycle of a heat pump is actually turning on your airconditioning to heat up the condenser to thaw it out. During this cycle your electric strip heaters "should" be adequate enough to compensate for the a/c being on. At about 30 - 34 degrees outdoor temp there is not enough heat in the air to to adequately heat your home with the heat pump only. Some technitions will use an outdoor thermostat to turn off the heat pump when it is under 34 degrees outside. If you are to cold when its under 34 degrees intall more electric strip heaters.. But if you do this your electric bill may go up significantly.
Welcome to the wonderful world of electric heat pumps (lol).
Good luck.

Mar 29, 2009 | Goodman GMS90703BXA Heater

2 Answers

Goodman ac / heat pump


I just had a new unit installed and I am surfing for troubleshooting tips too. My unit is doing the same... cools well heat sucks. my problem has been isolated down to the reversing valve... It is constantly energised which means it is constantly in a/c mode even when kicking on the heat strips... We disconnected a line at the thermostat and it is working well as a heater now. You may want to check yours to see if it is actually kicking over into to heat mode... -rob

Nov 25, 2007 | Goodman CLQ36AR49 Air Conditioner

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