Troubleshooting by Remote Controller Si20-701_B
427
3.99
UA
Improper Combination of
Indoor and Outdoor Units,
Indoor Units and Remote
Controller
Remote Controller Display
UA
Applicable Models
FMCQ, FMDQ-A7/B7
CMSQ
Method of Error Detection
A difference occurs in data by the type of refrigerant
between indoor and outdoor units.
The number of indoor units is out of the allowable range.
Error Decision Conditions
The error decision is made as soon as either of the
abnormalities aforementioned is detected.
Supposed Causes
Excess of connected indoor units
Defective outdoor unit PCB (A1P)
Mis-matching of the refrigerant type of indoor and
outdoor unit.
Setting of outdoor unit PCB was not conducted after
replacing to a spare PCB.
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