Specifications

Troubleshooting by Remote Controller SiBE341027
160 Service Diagnosis
2.35 Transmission Error (Across Outdoor Units)
Remote
Controller
Display
U7
Applicable
Models
RQYQ-PY1B
Method of Error
Detection
Micro-computer checks if transmission between outdoor units is normal.
Error Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes

Connection error in connecting wires between outdoor unit and external control adaptor for
outdoor unit

Connection error in connecting wires across outdoor units

Setting error in switching cool/heat

Unified address setting error for cool/heat
(external control adaptor for outdoor unit)

Defective outdoor unit PCB (A1P)

Defective external control adaptor for outdoor unit