50
Table 14.2 Fault Code
Code
Abnormality Cause
03
Communication is
abnormal.
Communication cable between water module and outdoor unit
or wired controller is abnormal.
11
Water temperature sensor
at inlet is abnormal.
Temperature sensor is in short-circuit or open-circuit.
12
Water temperature sensor
at outlet is abnormal.
Temperature sensor is in short-circuit or open-circuit.
13
Temperature sensor of
liquid pipe is abnormal.
Temperature sensor is in short-circuit or open-circuit.
14
Temperature sensor of
gas pipe is abnormal.
Temperature sensor is in short-circuit or open-circuit.
16
Temperature sensor of
water tank is abnormal.
Temperature sensor is in short-circuit or open-circuit.
17
Temperature sensor at
outlet of plate heat
exchanger is abnormal.
Temperature sensor is in short-circuit or open-circuit.
70
Water flow or pressure
is abnormal.
Water system has insufficient pressure or water flow is very
low.
71
Water tank electric heating
is abnormal.
Electric heating temperature protective switch in water tank
cuts off.
72
Water module electric
heating is abnormal.
Electric heating temperature protective switch in water module
cuts off.
73 Water flow switch abnormal Water flow switch is active when water pump is OFF.
80
Communication is
abnormal.
Communication between wired controller and water module is
abnormal.
7C
Communication is
abnormal.
Communication between air-conditioner indoor unit and
outdoor unit is abnormal.
76
Freezing protection.
Temperature of Plate heat exchanger is too low to freeze.
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