Constant ac problems
#1
08-07-19, 07:55 PM
Constant ac problems
Hey everyone,
looking for for a little help. I have a trane gam5a0b30m21sab that was built in 2013, and have had constant problems the last year. The most recent issue I have is that the coils are freezing, I had a company check refrigerant level and it wasn’t only about a pound low, I’ve checked to see if the coils were dirty and they’re pretty clean. One thing I noticed today is that the blower will run for a minute or two and then stop running but everything else sounds like it’s still running which is why I think the coils are freezing. When looking around at the blower I do hear a humming noise so not sure if it’s a capacitor. The motor on the blower doesn’t seem hot either. Any help would be greatly appreciated.
looking for for a little help. I have a trane gam5a0b30m21sab that was built in 2013, and have had constant problems the last year. The most recent issue I have is that the coils are freezing, I had a company check refrigerant level and it wasn’t only about a pound low, I’ve checked to see if the coils were dirty and they’re pretty clean. One thing I noticed today is that the blower will run for a minute or two and then stop running but everything else sounds like it’s still running which is why I think the coils are freezing. When looking around at the blower I do hear a humming noise so not sure if it’s a capacitor. The motor on the blower doesn’t seem hot either. Any help would be greatly appreciated.
#2
08-07-19, 08:16 PM
Group Moderator
Welcome to the forums.
The system charge has no affect on the blower. If the blower is stopping...... the coil will freeze.
You need to determine if your blower uses a capacitor. If it's a high efficiency unit.... it may use an electronic variable speed motor.
On further checking..... your air handler does use an ECM motor. There will not be a replaceable cap. That is an expensive motor and be under warranty on your unit. The link is the motor.
ECM motor
The system charge has no affect on the blower. If the blower is stopping...... the coil will freeze.
You need to determine if your blower uses a capacitor. If it's a high efficiency unit.... it may use an electronic variable speed motor.
On further checking..... your air handler does use an ECM motor. There will not be a replaceable cap. That is an expensive motor and be under warranty on your unit. The link is the motor.
ECM motor
#5
08-08-19, 05:30 PM
Group Moderator
#8
08-08-19, 06:58 PM
Group Moderator
A buzzing transformer is not abnormal..... annoying though. It's possible it's not mounted tightly. Try rapping on it with a screwdriver and see if the hum changes.
Did you give the place you bought the motor the full model number ?
I believe the motor needs to be programmed for a particular unit.
Did you give the place you bought the motor the full model number ?
I believe the motor needs to be programmed for a particular unit.
