Trane Axiom EXH Series - Page 65

WSHP-SVX014J-EN
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Table 48. Troubleshooting table (continued)
Problem
Heat-
ing
Cool-
ing
Cause Correction
Low suction pressure
X X
Undercharged Locate leak, repair and recharge
X X
Restricted thermal expansion valve Repair / replace
X
Inadequate air flow
Check, clean blower and coil
X
Dirty filter Clean/replace
X
Inadequate GPM
Increase GPM
Low pressure switch open
X
Inadequate GPM
Increase GPM
X Water too cold
Increase temperature
X
Inadequate air flow
Increase CFM
X
Dirty filter Clean/replace
X X
Undercharged with refrigerant Increase charge
X X
Defective pressure switch Replace
X X Heat transfer fluid too cold
Raise water temperature
Troubleshooting