Ask Experts Questions for FREE Help !
Ask
    jlssr's Avatar
    jlssr Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 7, 2006, 05:10 PM
    Lennox Heat Pump
    I have a Lennox heat pump. I have measured 220VAC to the bottom of the compressor contactor. However, when I turn the thermostat to cool the blower fan comes on but the outside compressor is not energized. I can manually engage the contactor and the compressor and cooling fan come on. I can't measure 24VAC on the other side of the contactor and I don't have a wiring diagram that I can use to trace it. I can measure 24VAC at other points in the outside compressor cabinet.

    If anyone has a suggestion, I will appreciate the help.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Nov 7, 2006, 05:14 PM
    Look for an open connection from the Y wire at thermostat to the indoor unit then to the outside unit to find where it stops sending 24 volts.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Whalen Heat Pump - no heat! [ 9 Answers ]

Hi, I live in a condo and have a Whalen Heat Pump. I changed the thermostat to a Noma digital programmable model (model # 52-255808) in the summer time. The A/C works well and the fan works well, but I did not test for heat as it was summer when I installed it. Well, now that the weather is...

NO HEAT! Janitrol heat pump and AC system. Changing to Lux Thermostat. Wiring issue. [ 11 Answers ]

I have a Janitrol A/C and heat pump system. I replaced the thermostat with a Lux T9000LC The A/C works fine, but the heater does not. I have it wired as follows: G - Green Y - Yellow W - White RH - Pink B -

Electric Heat-Pump-No heat [ 2 Answers ]

I had a wall-mounted unit installed in a room in may of this summer. In the middle of the night the heat shut off and has not come back on since. It is an Amana, electric heat with heat pump unit. The cooling works, the heating setting does not blow air at all. When I remove the cover it says...

Heat pump [ 3 Answers ]

My condensing fan motor is humming. I just replaced the capicitor 2 weeks ago and visually it looks OK. Will the motor hum if the unit is in defrost cycle?

Heat Pump [ 7 Answers ]

I have a Lennox heat pump. My builder was required to put one in per our neighborhood association. However, he set the thermostat so that it would never kick on because he thought I would like the hotter air provided by the gas furnace. I was thinking with the price of gas on the rise the heat...

View more questions Search