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I have a PTH153B50AM that stopped heating. I 't know if the

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I have a PTH153B50AM that...
I have a PTH153B50AM that stopped heating. I don't know if the cooling is still working but the fan comes on and I have reset it to factory settings and pushed the manual reset buttons on the heating coils. there was no indication of failure just did not heat up yesterday.
Submitted: 1 year ago.Category: HVAC
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Answered in 10 hours by:
1/19/2016
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,765
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Verified

I am very sorry your question has not been picked up yet.

I just logged on and found you had not been assisted.

Please let me know if you still need help and I will do my best. Please do not "Rate" as we have not worked toward an answer yet.

If you would like to proceed let me know by replying.

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Customer reply replied 1 year ago
I am still interested in getting an answer, since I have already paid. I did schedule an appointment with Sears Home Repair for Wednesday but I definitely want to know what you think. My unit is a wall unit, like the ones in hotels. It is a combo AC/heater. It just stopped heating yesterday. I have reset it as per the manual and have manually reset the heating coils as per manual. Also rest the GFI. What do you think?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago

OK, does the unit run/blow air, but no heat?

Or does the unit not respond at all in heat?

Does it work in cool function?

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Customer reply replied 1 year ago
The fan runs but no hot air. I don't know if the cooling is working, it is pretty cold here so I can't tell. It was cooling fine this summer and it was heating fine until Moday. No bang, smoke or power outage, just no heat when turned on Monday morning.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago

Thank you.

We dont want cooling obviously but I wanted to test the reverse valve. This is what determines heat or cool.

Sometimes we can switch from cool to heat and back a few times and it will jog the reverse valve.

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Customer reply replied 1 year ago
Sorry. I am not familiar with that procedure. Would I just try to start the cool side by pushing the "cool" button, let it run a bit then shut it down and push the "heat" button?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago

that is correct...and in the event the blower runs but not ac compressor we are getting into a defect in the 220v circuit

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Customer reply replied 1 year ago
Billy, are you still out there? It is 8:15AM here and I am home. Right now the unit is running in the "FP" mode (freeze protect?) and I can't change it until that clears. I did reset the 220 breaker in the basement but the "FP" status returned immediately. It is about 20 degrees outside so this may run for a bit. Once the FP clears I will try to jiggle the heat/cool states. Please respond when you get this.
Customer reply replied 1 year ago
Ok Billy, I tried to start the "cool" side but nothing happened. The cool light lit, I could only set the thermostat down to 60 and nothing happened. The blower did not come on or anything. I shut it off and pushed the heat and the blower came on. Then I tried toggleing when it was running. The thermostat switched between 68 and 74 and there was a switching sound from inside but still no heat.
Customer reply replied 1 year ago
Also, while toggleing the fan indicator whet from "auto" (cool) to "low" (heat).
Customer reply replied 1 year ago
The switch sound sounds like it is coming from behind the info panel not deep inside the unit.
Customer reply replied 1 year ago
Info panel= logic board
Customer reply replied 1 year ago
Is there anyone out there monitoring this discussion? It is now 2:30PM and I have had to go to work. If there is anyone out there monitoring this please respond to my earlier posts to Billy.
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BillyHvac
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,765
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