Nibe F2040 - Page 42

May be due toDescriptionAlarm text on the dis-
play
Alarm
■
The fan cannot rotate freely
■
Defective control board in F2040
■
Defective fan motor
■
Control board in F2040 dirty
■
Fuse (F2) blown
Deviations in the fan speed in F2040.Fan alarm224
■
Sensor does not work (see section
"Ambient temperature sensor")
■
Insufficient air circulation or heat ex-
changer
■
Blocked
■
If the fault persists during cooling,
there may be an insufficient amount
of refrigerant.
■
Defective control board in F2040
Temperature deviation on the hot gas
sensor (Tho-D) twice within 60 minutes
or for 60 minutes continuously.
Continuously high hot
gas
230
■
F2040 not powered
■
Fault in the communication cable.
Communication fault with accessory
board
Communication error254
■
Sensor does not work (see section
"Disturbances in comfort")
■
Insufficient air circulation or blocked
heat exchanger
■
Defective control board in F2040
■
Too much refrigerant
Temperature deviation on the heat ex-
changer sensor (Tho-R1/R2) five times
within 60 minutes or for 60 minutes
continuously.
High temperature in heat
exchanger
261
■
Can occur when 15V power supply to
the inverter PCB is unstable.
When IPM (Intelligent power module)
displays FO-signal (Fault Output) five
times during a 60-minute period.
Power transistor too hot262
■
Incoming power supply interference
■
Service valve closed
■
Insufficient amount of refrigerant
■
Compressor fault
■
Defective circuit board for inverter in
F2040
Voltage from the inverter outside the
parameters four times within 30 minutes.
Inverter error263
■
Open circuit in connection between
boards
■
Defective circuit board for inverter in
F2040
■
Defective control board in F2040
Communication between circuit board
for inverter and control board broken.
Inverter error264
■
Defective fan motor
■
Defective circuit board for inverter in
AMS 10
Continuous deviation on power transistor
for 15 minutes.
Inverter error265
■
Service valve closed
■
Loose connection sensor (BT15, BT3)
■
Defective sensor (BT15, BT3)
■
Too little refrigerant
Insufficient refrigerant is detected upon
start-up in cooling mode.
Insufficient refrigerant266
■
Defective circuit board for inverter in
F2040
■
Defective control board in F2040
■
Compressor fault
Failed start for compressorInverter error267
NIBE™ F2040Chapter 9 | Alarm list40