Intertherm M3RL080A
Posted: Sat Feb 07, 2009 11:41 am
Inducer Blower limits out the 145 degree swich. Push the switch button and it resets and works for a while. The red light is flashing when it limits out.
I have tried the following:
Replace the 145 degree limit switch on the inducer.
Left the cover off
Vac'd out the exhaust and intake vents. Small particles as described below, but small amount.
Removed the inducer, there was a hardened gasket or maybe glue substance formed to the bottom of the inducer intake that was blocking it about 15-20%, this didn't fix it.
One thing that is unusual is that there is NO water being taken out of the exhaust? This heater vent goes up to the ceiling and then horizontal to above the garage, and I didn't notice any blockage.
I have this same heater upstairs and it vents straight up and pulls about a gallon every 48 hours.
My next thought is to potentially replace the inducer motor.
Ideas??
I have tried the following:
Replace the 145 degree limit switch on the inducer.
Left the cover off
Vac'd out the exhaust and intake vents. Small particles as described below, but small amount.
Removed the inducer, there was a hardened gasket or maybe glue substance formed to the bottom of the inducer intake that was blocking it about 15-20%, this didn't fix it.
One thing that is unusual is that there is NO water being taken out of the exhaust? This heater vent goes up to the ceiling and then horizontal to above the garage, and I didn't notice any blockage.
I have this same heater upstairs and it vents straight up and pulls about a gallon every 48 hours.
My next thought is to potentially replace the inducer motor.
Ideas??