Nibe F2040-12, Installer Manual

Page: 52 / 84

May be due to Description Alarm 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 alarm 224
■
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 refri-
gerant.
■ 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 error 254
■
Sensor does not work (see section "Dis-
turbances 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 con-
tinuously. 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 hot 262
■
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 error 263
■
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 error 264
■
Defective fan motor
■
Defective circuit board for inverter in
F2040
Continuous deviation on power transistor
for 15 minutes. Inverter error 265
■
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 refrigerant 266
■ Defective circuit board for inverter in
F2040
■
Defective control board in F2040
■
Compressor fault
Failed start for compressor Inverter error 267
■
Sudden power failure Overcurrent, Inverter A/F module Inverter error 268
F2040 Chapter 9 | Alarm list 52