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Tech Tips
Freezing of Indoor Coil
FI0117
- Low Airflow
- undersized duct, return and/or supply
- blower wheel not turning proper direction
- incorrect drive package on blower for duct design
- improperly installed duct, return and/or supply
- dirty air filter
- air filter with excessive resistance to air flow
- closed supply air registers
- blocked return grill
- Low Load
- dirty indoor coil
- return air temperature low
- System components not correctly matched
- indoor coil
- refrigerant lines
- undersized indoor piston
- Bad indoor blower motor/bad motor capacitor
- Unit undercharged
- Unit Operating in Low Ambient Conditions With No Low Ambient Control
- Inoperative Low Ambient Control
- Unit extremely overcharged
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