Troubleshooting by Remote Controller Si20-701_B
233
Remote Controller Display
H4
Applicable Models
RZQ-B
Method of Error Detection
îš„ Check the continuity of LPS
îš„ LPS is not operated when the low pressure is dropped
under specific pressure (0.12MPa).
Error Decision Conditions
When there is no continuity in the LPS during
compressor start operating.
LPS is not operated when the low pressure is dropped
under specific pressure (0.12MPa) during compressor
operating.
Supposed Causes
îš„ Defective LPS
îš„ Disconnection in LPS harness
îš„ Defective connection of LPS connector
îš„ Defective outdoor unit PCB
îš„ Refrigerant shortage
îš„ Stop valve is not opened
îš„ Defective electronic expansion valve
îš„ Clogged check valve
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