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
îš„ Defective high pressure switch
îš„ Disconnection in high pressure switch harness
îš„ Defective connection of high pressure switch
connector
îš„ Clogged indoor unit suction filter (in heating)
îš„ Dirty outdoor unit heat exchanger
îš„ Defective outdoor unit fan
îš„ Refrigerant overcharge
îš„ Stop valve is not opened
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