Heat-pump (ventless) dryer drying poorly
Heat-pump dryers are slower than vented dryers by design. Real faults are usually clogged lint or condenser filters, a blocked drain path, or a cold room. The refrigerant circuit is sealed: diagnosis only.
Before you start
- No work on the refrigerant circuit: refer to an EPA 608-certified technician
- Some units use flammable refrigerant: no flames or sparks near a suspected leak
Diagnostic steps
Unlock all 4 steps with expected values
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