FieldBench
Carrier codes

Carrier

43

Lockout

PS tubing / drain

Blockage or disconnected hose.

Walk 43 in Diagnose

2 plates — walk the one on the cabinet

First check

1 Float and the pan

On Carrier 59TP6 a drain / float code is water until proven otherwise. Pan full? Float stuck? Secondary drain piped? Trace each hose. Attic jobs grow ice in the vent, not just the hose.

Expect: Pan dry after you clear it. Float moves freely.

The rest of the walkthrough is Diagnose.

On the plates

  • Trace each hose. Attic jobs grow ice in the vent, not just the hose.

Plates that use 43

Same number, other makers

43 on Carrier is not the same code on these plates.