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Troubleshooting by Indication on the Remote Controller
E3
3.19 "
" Outdoor Unit:
E3
Remote
Controller
Display
Applicable
U-4..6ML5DPQ, U-4..6ML5XPQ
Models
Method of
Abnormality is detected when the contact of the high pressure protection switch opens.
Malfunction
Detection
Malfunction
Error is generated when the HPS activation count reaches the number specific to the operation
mode.
Decision
(Reference) Operating pressure of high pressure switch
Conditions
Operating pressure: 4.0MPa
Reset pressure:
Supposed
Causes
164
Actuation of High Pressure Switch
3.0MPa
Actuation of outdoor unit high pressure switch
Defect of High pressure switch
Defect of outdoor unit PC board (A1P)
Instantaneous power failure
Faulty high pressure sensor
Urban Multi ML5 · Mini UM · Heat Pump
Troubleshooting
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Table of Contents
Troubleshooting
