Lennox mini split code FP

What to do

You can almost always clear this yourself with the steps below.

1. Turn the FP/freeze-protection function off from the remote (or set a normal heating temperature) to leave this mode.

When to call a technician

This is not a fault. No technician is needed unless it will not clear.

Which Lennox units show FP

This page applies to Lennox MPA / MPB / MLA single-zone, MPA / MPB / MLA multi-zone, MCB / MWCB, MWMA / MWMB, MCFA / MCFB and MMDA / MMDB units on the MCB / MWCB indoor unit display. Lennox's own documentation lists FP as "Low-temperature heating hold (46°F freeze-protection mode)", the same definition used across the Midea platform (four-character codes) it is built on. If your unit shows a code with a different shape (for example a four-character code, or a plain number), it is from a different table; use the lookup with your exact code.

Where Lennox shows this code

MCB / MWCB indoor unit display: The display shows a two-letter prefix and a two-character suffix, either together (EH60) or alternating (EH, then 60). Write both parts down; the suffix is what identifies the fault. EH and EL are indoor-side faults, EC is an outdoor-side fault, and PC is an outdoor protection: the unit stopped itself to prevent damage.

Other Lennox codes

Same part of the system as FP:

All Lennox error codes

FP on other brands

The same characters do not always mean the same thing. Check the brand on your unit.

• Pioneer FP Low-temperature heating hold (46°F freeze-protection mode)
• Zone Air FP Anti-condensation (frequency reduction protection)