FieldBench
Carrier codes

Carrier

13 / 33

Protect

Limit / lockout

Airflow or rollout. 13 is the hardened 33.

Walk 13 / 33 in Diagnose

Sign in for the next measurement

First check

1 Treat this as flame outside the exchanger

Do not reset the Carrier 59SP6 rollout and walk away. Write the code, kill the call, and look for flame at the burners, crossover, and vestibule before you do anything else.

Expect: No flame outside the exchanger. Burners seated. Crossover lit.

If pass: Still inspect secondary / flue / condensate before you reset.

The rest of the walkthrough is Diagnose.

On the plates

  • VS heat CFM / setup — not a 9-speed tap.
  • Filter, coil, return. Rollout is manual reset.

Plates that use 13 / 33

Same number, other makers

13 / 33 on Carrier is not the same code on these plates.