Gonzowerke
Member
- Joined
- Dec 27, 2012
- Messages
- 11
- Reaction score
- 0
Greetings all,
Hope everyone had a nice Christmas.
Tried searching everywhere, including here, and have not found my exact problem happening.
A little background first;
Hunter programmable thermostat
Trane Xsomething compressor
Trane XL air handler
Summer before last, compressor capacitor was replaced by HVAC service company.
Last summer, 5 amp fuse for Thermostat blew.
NORMAL SEQUENCE OF OPERATION:
Set temp, Thermo goes click, stage 1 and 2 lights start blinking, fan and compressor come on, comfort ensues. Stage 2 light on thermo may or may not go off, depending on what the system is doing.
Now for my problem.
Set Thermostat for heat or auto heat, and temp to a level that turns it on. Hear Thermostat go click, see light for stage 1 start blinking, but not stage 2 ,hear click, all lights, including display backlight shut off and stage one light just blinks. No fan, No compressor noise. Put it in Emergency Heat mode, Stage 1 light lights up red as it should, fan comes on, expensive heat blows, Wife doesn't freeze.
The Thermo manual says the blinking means it is in a "Hold Mode" that the thermo has to prevent rapid cycling of the compressor. The troubleshooting section of the manual just says to replace the thermo if heat does not come on. I thought the batteries might be dead, even though they are only for backup, so I replaced them. When I removed the thermo from the wall, I blew the fuse on the air handler that feeds the thermo. All circuit breakers for all units are good and reset, no change.
Since the fan works in Emergency mode, and the fuse blew, I am leaning towards it being a Thermostat problem, not a unit one. Luckily, I am installing a programmable thermostat in my Mom-in-laws home today, and will be able to use her old one to test my unit.
I just thought I would run this by everyone here and see what anyone thought, or they have had this exact problem.
Thanks in advance,
Chris
Hope everyone had a nice Christmas.
Tried searching everywhere, including here, and have not found my exact problem happening.
A little background first;
Hunter programmable thermostat
Trane Xsomething compressor
Trane XL air handler
Summer before last, compressor capacitor was replaced by HVAC service company.
Last summer, 5 amp fuse for Thermostat blew.
NORMAL SEQUENCE OF OPERATION:
Set temp, Thermo goes click, stage 1 and 2 lights start blinking, fan and compressor come on, comfort ensues. Stage 2 light on thermo may or may not go off, depending on what the system is doing.
Now for my problem.
Set Thermostat for heat or auto heat, and temp to a level that turns it on. Hear Thermostat go click, see light for stage 1 start blinking, but not stage 2 ,hear click, all lights, including display backlight shut off and stage one light just blinks. No fan, No compressor noise. Put it in Emergency Heat mode, Stage 1 light lights up red as it should, fan comes on, expensive heat blows, Wife doesn't freeze.
The Thermo manual says the blinking means it is in a "Hold Mode" that the thermo has to prevent rapid cycling of the compressor. The troubleshooting section of the manual just says to replace the thermo if heat does not come on. I thought the batteries might be dead, even though they are only for backup, so I replaced them. When I removed the thermo from the wall, I blew the fuse on the air handler that feeds the thermo. All circuit breakers for all units are good and reset, no change.
Since the fan works in Emergency mode, and the fuse blew, I am leaning towards it being a Thermostat problem, not a unit one. Luckily, I am installing a programmable thermostat in my Mom-in-laws home today, and will be able to use her old one to test my unit.
I just thought I would run this by everyone here and see what anyone thought, or they have had this exact problem.
Thanks in advance,
Chris