Heat pump auxillary and emergency heat
#1
12-12-00, 05:32 PM
Two questions, both related:
I recently bought a house with a Janitrol heat pump system. I replaced the thermostat with a Hunter model 44428 programmable thermostat. The Janitrol thermostat only had a W2 wire, not a W1. So, I hooked up the W2 to the W2 port on the Hunter (which it says is second stage auxillary). Second stage come on when the actual temp is 4 degrees below the set temp. There is a first stage aux heat that comes on 3 degress below set. I have nothing hooked up there. I had a professional service come to fix the unit at one point and they shorted the W1 port to the Y1 port (first stage compressor), so they are alway on together, and left the W2 where it is. Is this correct?
The temperature has dropped to around 23 around here (not normal at all) and my heat pump can only maintain around 65 degrees without using auxiliary heat. The thermostat will automatically kick on aux heat when it has reached the threshold, which as stated above is several degrees lower than I like it. I keep it set at 68. I switched to the emergency heat mode on the Hunter so that it will use what I guess is the aux heat to help heat the house to the temperature I like. Maybe I wrong here. Unfortunately, when it reaches the temp I like, it keeps going and does not shut off. The Hunter documentation says the E port (emergency heat relay) is always on in emergency mode. Is this why it keeps going, or is there some other wiring problem?
Sorry it's so long. I'm just interested in how this works. Thanks!!
Bill
I recently bought a house with a Janitrol heat pump system. I replaced the thermostat with a Hunter model 44428 programmable thermostat. The Janitrol thermostat only had a W2 wire, not a W1. So, I hooked up the W2 to the W2 port on the Hunter (which it says is second stage auxillary). Second stage come on when the actual temp is 4 degrees below the set temp. There is a first stage aux heat that comes on 3 degress below set. I have nothing hooked up there. I had a professional service come to fix the unit at one point and they shorted the W1 port to the Y1 port (first stage compressor), so they are alway on together, and left the W2 where it is. Is this correct?
The temperature has dropped to around 23 around here (not normal at all) and my heat pump can only maintain around 65 degrees without using auxiliary heat. The thermostat will automatically kick on aux heat when it has reached the threshold, which as stated above is several degrees lower than I like it. I keep it set at 68. I switched to the emergency heat mode on the Hunter so that it will use what I guess is the aux heat to help heat the house to the temperature I like. Maybe I wrong here. Unfortunately, when it reaches the temp I like, it keeps going and does not shut off. The Hunter documentation says the E port (emergency heat relay) is always on in emergency mode. Is this why it keeps going, or is there some other wiring problem?
Sorry it's so long. I'm just interested in how this works. Thanks!!
Bill
#2
12-13-00, 03:05 PM
That is correct about the Y and w1 jumper on your type of system, that is your 1st stage heat with janitrol. Yours is a generic, works with anything t'stat. Now when you click over to em. heat only, your t'stat internally switches the 2nd stage heat to 1st stage and uses only the strip heaters in your air handling unit. It should shut off. Is your fan switch in the on position, it should be on auto. Or you may have a wiring problem or even a bad t'stat. Is the outdoor unit running in em heat?
