Air Handler Installation Manual
Number Error Code Error
22
23
25
26
27
PL Bus low-voltage protection
PH Bus high-voltage protection
PU Charge loop error
ee Driver memory chip error
e1 High pressure sensor error
C4 ODU jumper cap error
24
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Troubleshooting
NOTICE
When the unit is connected with the wired controller, the error code will show simultaneously
on it.