FieldBench
Lennox codes

Lennox

P

Status

Program unit size

VS only. Stores cabinet / motor capacity in non-volatile memory.

Walk P in Diagnose

2 plates — walk the one on the cabinet

First check

1 Read the plug / card on THIS cabinet

On Lennox EL195NE the model plug or shared-data card must match this cabinet size. A 100 kBtu plug in an 80 cabinet overfires and limits. A leftover memory card after a control swap throws d0/d4-class codes. Required after IFC or blower swap. Wrong or blank size → E202 / E203.

Expect: Plug / card part matches the rating plate and the replacement control bulletin.

The rest of the walkthrough is Diagnose.

On the plates

  • Required after IFC or blower swap. Wrong or blank size → E202 / E203.
  • Follow the P-menu character for THIS EL296V cabinet, then hold to accept.

Plates that use P