Pioneer mini split code CP

What to do

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

1. Check any external switch or contact wired to the indoor unit.

When to call a technician

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

Which Pioneer units show CP

This page applies to Pioneer WYS, WYT, Diamante, Inverter+ and Multi-zone (WYD/WYE) units on the indoor unit display (four-character codes). Pioneer's own documentation lists CP as "Remote on/off contact open", 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 Pioneer shows this code

indoor unit display (four-character codes): 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 Pioneer codes

Same part of the system as CP:

All Pioneer error codes

CP on other brands

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

• MRCOOL CP Remote on/off contact open