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
Summary of Contents for REYQ8-48PY1B
Page 1: ...Service Manual REYQ8 48PY1B R 410A Heat Recovery 50Hz SiBE37 701_B ...
Page 456: ...Piping Installation Point SiBE37 701_B 445 Appendix ...
Page 460: ...Example of connection SiBE37 701_B 449 Appendix ...
Page 476: ...Revision History Date News No Contents 2010 9 10 M 10011 Correction of service manual ...