Heat pump keeps freezing up - http://www.hvacmechanic.com/ Forums

Original message

jamescul

71.115.206.129

"Heat pump keeps freezing up" , posted Fri 20 Jun 11:27

The vapor line is freezing up from the outside in. The compressor seems to be working (can hear it), pressures are normal and recently cleaned coils, filter and outside unit. what am I missing? Unit not under very much pressure due to moderate temperatures (not out of the 80s). This unit is only 5 years old.

Replies:

oldmangobles

64.85.145.187

"Re(1):Heat pump keeps freezing up" , posted Sun 22 Jun 21:03

two reasons for suction line to freeze,low on charge or poor airflow.post make and model #, pressures and refrigerant type.take subcooling and superheat readings ...

old man mike