Nibe F2040 - Page 52

May be due toDescriptionAlarm text on
the display
Alarm no. in-
door unit
- Service valve closedInsufficient refrigerant is detected upon
start-up in cooling mode.
Insufficient refri-
gerant
266
- Loose connection sensor (BT15, BT3)
- Defective sensor (BT15, BT3)
- Too little refrigerant
- Defective circuit board for inverter in
F2040
Failed start for compressorInverter error267
- Defective control board in F2040
- Compressor fault
- Sudden power failureOvercurrent, Inverter A/F moduleInverter error268
- Cold weather conditionsTemperature of BT28 below the value that
permits operation.
Cold outdoor air.271
- Sensor fault.
- Warm weather conditions.Temperature of BT28 above the value that
permits operation.
Hot outdoor air.272
- Sensor fault.
- Open-circuit or short-circuit on sensor
input
Sensor fault, heat exchanger in F2040
(Tho-R).
Sensor fault Tho-
R
277
- Sensor does not work (see "Disturbances
in comfort" section)
- Defective control board in F2040
- Open-circuit or short-circuit on sensor
input
Sensor fault, outdoor sensor in F2040
(Tho-A).
Sensor fault Tho-
A
278
- Sensor does not work (see "Disturbances
in comfort" section)
- Defective control board in F2040
- Open-circuit or short-circuit on sensor
input
Sensor fault, hot gas in F2040 (Tho-D).Sensor fault Tho-
D
279
- Sensor does not work (see "Disturbances
in comfort" section)
- Defective control board in F2040
- Open-circuit or short-circuit on sensor
input
Sensor fault, suction gas in F2040 (Tho-S).Sensor fault Tho-
S
280
- Sensor does not work (see "Disturbances
in comfort" section)
- Defective control board in F2040
- Open-circuit or short-circuit on sensor
input
Sensor fault, low pressure transmitter in
F2040.
Sensor fault LPT281
- Sensor does not work (see "Disturbances
in comfort" section)
- Defective control board in F2040
- Fault in the refrigerant circuit
Incorrectly set DIP switches on circuit
board in outdoor unit.
Faulty combination of indoor and outdoor
units.
Incompatible
outdoor unit.
294
- Open-circuit or short-circuit on sensor
input.
Sensor fault.
Sensor high pressure heating/low pressure
cooling in F2040 (BP4).
Sensor flt BP4404
- Sensor does not work (see "Disturbances
in comfort" section).
- Defective control board AA23 in F2040.
NIBE™ F2040Chapter 6 | Troubleshooting50