Skip to main content
Error code reference
Haier Air Conditioner Error Code E2
Faulty indoor thermistor - sensor in short or broken circuit (Power LED blinking, Timing ON, Running ON)
SourceHaier HSU-22H03/R2 - Full Service Manual: Split AC Unitp. 37
Diagnostic procedure
The full E2 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check indoor thermistor sensor for short or open circuit
SourceHaier HSU-22H03/R2 - Full Service Manual: Split AC Unitp. 37
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock E2 procedure $9.95
Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.
Where this code is documented
4 manuals in the MyPros+ library document this code for Haier air conditioner.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax