Daikin REYQ8-48PY1B - 3.16 “E1” Outdoor Unit: PCB Defect

SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 274
“
A9
”
Indoor Unit: Malfunction of Electronic Expansion
Valve Coil
Remote
Controller
Display
A9
Applicable
Models
Indoor units except FXFQ models
Method of
Malfunction
Detection
Check coil condition of electronic expansion valve by using micro-computer.
Malfunction
Decision
Conditions
Pin input for electronic expansion valve coil is abnormal when initializing micro-computer.
Supposed
Causes

Defective drive of electronic expansion valve

Defective PCB of indoor unit

Defective relay cables