Daikin RZQ100B8V3B Service Manual page 207

ESIE05-03
3.3 Abnormal High Pressure (Detected by the HPS) (E3)
E3
Remote Controller
Display
Method of The protection device circuit checks continuity in the high pressure switch.
Malfunction
Detection
Malfunction When the high pressure switch is actuated
Decision Actuating pressure:
Conditions RZQ71~140
Supposed Causes
HPS settings The table below contains the preset HPS values.
RZQ71
RZQ100
RZQ125
RZQ140
Part 3 – Troubleshooting
Faulty high pressure switch
Disconnection in high pressure switch harness
Faulty connection of high pressure switch connector
Clogged indoor unit suction filter (in heating operation)
Dirty outdoor unit heat exchanger
Faulty outdoor unit fan
Refrigerant overcharge
Stop valve is left in closed.
Open
4.0 Mpa +0/-0.15
High pressure switch
Close
3.0 +/-0.15
Error Codes: Outdoor Units
Fuse
6.3A/250V
3–59
1
3 3
4
5