Nibe HBS 05 Series - Inverter and Compatibility Alarms

May be due toDescriptionAlarm text on the dis-
play
Alarm
■
Sudden power failureOvercurrent, Inverter A/F moduleInverter error268
■
Cold weather conditions
■
Sensor fault
Temperature of BT28 (Tho-A) below the
set value that permits operation
Cold outdoor air271
■
Warm weather conditions
■
Sensor fault
Temperature of BT28 (Tho-A) above the
value that permits operation
Hot outdoor air272
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board in AMS 10
Sensor fault, heat exchanger in
AMS 10(Tho-R).
Sensor fault Tho-R277
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board in AMS 10
Sensor fault, outdoor temperature sensor
in AMS 10 BT28 (Tho-A).
Sensor fault Tho-A278
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board in AMS 10
Sensor fault, hot gas in AMS 10 (Tho-D).Sensor fault Tho-D279
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board in AMS 10
Sensor fault, suction gas in AMS 10 (Tho-
S).
Sensor fault Tho-S280
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board in AMS 10
■
Fault in the refrigerant circuit
Sensor fault, low pressure transmitter in
AMS 10.
Sensor fault LPT281
■
Outdoor module and indoor module /
control module are not compatible.
Heat pump and indoor module / control
module do not work properly together
due to technical parameters.
Non-compatible air/wa-
ter heat pump
294
Open circuit or short circuit on sensor in-
put
Sensor fault, Sensor high pressure heat-
ing/low pressure cooling in HBS 05 (BP4).
Sensor fault BP4404
Sensor does not work (see section "Dis-
turbances in comfort")
Defective control board AA23 in HBS 05
39Chapter 9 | Alarm listHBS 05