Hj" Malfunction Of Water System - Daikin VRV - WII Service Manual

Troubleshooting by Indication on the Remote Controller

2.20 "HJ" Malfunction of Water system

HJ
Remote
Controller
Display
Applicable RWEYQ60, 72, 84MTJU
Models
Method of
Malfunction
(When interlock setting is provided.)
Detection
Malfunction
Decision
Conditions
Supposed
Causes
184
Detect abnormalities using the thermistor on the side of the heat exchanger gas.
Detect turned off interlock circuit.
When temperature on the heat exchanger gas side (R4T) drops remarkably with the smallest
operation step (52 Hz) of the compressor
With interlock setting provided, when interlock circuit is turned off.
Clogged water piping system
Insufficient heat exchanger water
Dirty heat exchanger
Disconnected connector
Faulty thermistor on the heat exchanger gas side
Faulty low pressure sensor
SiUS30-604
Troubleshooting