Hisense AHM-080HCDSAA - Page 355

334
Troubleshooting
Alarm
Code
Category
Cause Code
of Stoppage
Detail of Abnormality Main Factors
70 Indoor unit d1-70 Water Pressure Alarm
Water pressure is detected abnormality in the
hydraulic cycle
71 Indoor unit d1-02
Protection Thermostat of DHW Electric
Heater Activation
High temperature is detected in DHW Electric
Heater
72 Indoor unit d1-02
Protection Thermostat of Auxiliary Electric
Heater Activation
High temperature is detected in Auxiliary Electric
Heater
74 Indoor unit d1-74 Overheating protection for water Cycle 2
Water Cycle 2 supply temperature > Target
temperature + o󰀨set lasting for 10mins.
75 Indoor unit d1-75 Water Pump (WP1) malfunction
Water Pump (WP1) output iPWM is detected
abnormality
76 Indoor unit d1-31
Freeze Protection Stop by indoor unit
temperature thermistors
Water temperature or refrigerant temperature is too
low and trigger freezing protection
78 Indoor unit d1-78 Hydraulic ow abnormality alarm (WP1)
Water ow is detected abnormality in the hydraulic
cycle
80 Indoor unit d1-02
Transmission failure between unit and
Master Controller
No Transmission for a continuous period of 5
minutes between Unit and Master Controller.
failed wiring (breaking, wiring error, etc.)
- Indoor unit d1-03 Freeze protection
Space Cooling is on and Outlet HP Water
Thermistor(TowHP) ≤3°C lasting for 100s or Inlet
Water Thermistor(Tiw) ≤5°C lasting for 100s.
- Indoor unit d1-07
Stoppage of Cooling Operation due to Low
Outdoor Air Temperature
Space Cooling is on and Outdoor Ambient
Temperature in 30mins or Second Outdoor Ambient
Temperature in 30mins is equal or lower to 5°C.
A1 Indoor unit d1-02 Auxiliary sensor Abnormality (Tow3)
Loose, disconnected, broken or short-circuited
connector.
Or the condition of Hydraulic Sparator is Enabled but
Tow3 has not been set in all the Auxiliary sensors
(A1-A7).
A2 Indoor unit d1-02 Auxiliary sensor Abnormality (Tswp)
Loose, disconnected, broken or short-circuited
connector.
Or the condition of Swimming pool is Enabled but
Tow2 has not been set in all the Auxiliary sensors
(A1-A7).
A3 Indoor unit d1-02 Auxiliary sensor Abnormality (Tsolar)
Loose, disconnected, broken or short-circuited
connector.
Or the condition of Solar function need to be set as
the solar sensor but Tsolar has not been set in all
the Auxiliary sensors (A1-A7).
A4 Indoor unit d1-02 Auxiliary sensor Abnormality (Tow2)
Loose, disconnected, broken or short-circuited
connector.
Or the condition of Cycle 2 is Enabled but Tow2 has
not been set in all the Auxiliary sensors (A1-A7).
A5 Indoor unit d1-02
Auxiliary sensor Abnormality (Room_
amb1…7)
Loose, disconnected, broken or short-circuited
connector.
F1 Indoor unit d1-02
Alarm sent by Outdoor unit (Outdoor unit
alarm 21-29)
-
F2 Indoor unit d1-02
Alarm sent by Outdoor unit (Outdoor unit
alarm except 21-29 and EE)
-
F3 Indoor unit d1-02
Alarm sent by Outdoor unit (Outdoor unit
alarm EE)
-
H2
Wired Remote
Controller
and Master
Controller
-
Wired Remote Controller and Master
Controller transmission alarm
Wired Remote Controller is congured as room
thermostat but no Wired Remote Controller is
detected.
EE Outdoor unit -
Compressor Protection Alarm
(It can not be reset from Master Controller)
This alarm code appears when the following alarms*
occurs three times within 6 hours.
*02, 07, 08, 43 to 45, 47