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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22519
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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My rheem air handler fan will not shut off even when I adjust

Customer Question

My rheem air handler fan will not shut off even when I adjust the thermostat setting to 'off' for both fan and unit. I disconnected entire thermostat and also replaced with a new thermost but the problem remains. the only means of turning the air handle fan off is from the circuit breaker.As a result, the contactor is not engaging automatically so in order to have cold air in my house I have to manually engage the contactor and keep it engaged with tie-wraps. Can this have anything to do with the capacitor? I confirmed that i have continuity from the thermostat to the air handle but dont know how to proceed to trouble shoot the defective contactor relay,faulty wiring from air handler to contactor relay, or a component on the air handler itself. Any suggestions?
Submitted: 7 years ago.
Category: HVAC
Expert:  BillyHvac replied 7 years ago.
<p>ok, so the indoor fan, as well as the outdoor unit does not shut off? Or just the indoor unit keeps running, and then you turn breaker off to unit which means nothing works?</p>
Customer: replied 7 years ago.
the indoor fan doesnt shut off unless the breaker is turned off. The outdoor fans does not work normally...however ,if I engage the contactor relay on the outside unit, the air blows cooler in the house.Still there is no way of controlling the temperature inside because its a if the thermostat has not effect on the air condition system
Expert:  BillyHvac replied 7 years ago.
Ok, What is the model number of the air handler? It sounds more like a stuck blower relay but I will pull the schematic and check
Customer: replied 7 years ago.
I think its Rheem - TML385 1667
Expert:  BillyHvac replied 7 years ago.
That TML is not registering as a rheem air handler. It usually is 4 letters beginning with R
Customer: replied 7 years ago.
Maybe its not Rheem but the numbers I got from the air handler are correct. I donot have access to the unit now but these are some more specs i took form it: volts 240/208; motor Hp-1/3;Moto FLa 3.1. Hope this helps in some way. Also, the outside unit is definitely rheem: specs are below: RAMA 036JAZ; 6090M149812162
Expert:  BillyHvac replied 7 years ago.
Ok, I will be back shortly.
Expert:  BillyHvac replied 7 years ago.
<p>The problem you have is a stuck blower relay in the air handler. this is a very common part and is easily replaced.</p><p> </p><p><a href="" target="_blank"></a></p>
BillyHvac and 2 other HVAC Specialists are ready to help you
Customer: replied 7 years ago.

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