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Tech Tips
Freezing of Indoor Coil
FI0121
- Low Airflow
- undersized duct, return and/or supply
- 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
- incorrect blower drive package
- improperly adjusted blower drive
- worn blower drive sheaves
- 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
- Unit Extremely Overcharged
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