Si20-701_B Troubleshooting by Remote Controller
150
3.26
E3
High Pressure Abnormality
(HPS)
Remote Controller Display
E3
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZR-KU/HU
Method of Error Detection
The protection device circuit checks continuity in the high
pressure switch.
Error Decision Conditions
When the high pressure switch is actuated
Supposed Causes
Defective high pressure switch
Disconnection in high pressure switch harness
Defective connection of high pressure switch
connector
Clogged indoor unit suction filter (in heating)
Dirty outdoor unit heat exchanger
Defective outdoor unit fan
Refrigerant overcharge
Stop valve is not opened
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