Nibe F2040-12, Installer Manual

Page: 51 / 84

May be due to Description Alarm text on the dis-
play Alarm
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board AA23 in F2040
Sensor fault, Sensor incoming water in
F2040 (BT3). Sensor fault BT3 3
■ Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board AA23 in F2040
Sensor fault, Sensor outgoing water in
F2040 (BT12). Sensor fault BT12 12
■
Open circuit or short circuit on sensor
input
■
Sensor does not work (see section "Dis-
turbances in comfort")
■
Defective control board AA23 in F2040
Sensor fault, Sensor fluid pipe in F2040
(BT15). Sensor fault BT15 15
■
Low flow during heating operation
■
Too high set temperatures
Too high temperature out from the con-
denser. Self-resetting. High condenser out 162
■
Temperature generated by another
heat source Too high temperature into the condenser.
Self-resetting. High condenser in 163
■
Set when the heat pump runs the de-
frosting procedure Not an alarm, but an operating status. Defrosting in progress 183
■
Insufficient air circulation or blocked
heat exchanger
■
Open circuit or short circuit on input for
high pressure switch (63H1)
■
Defective high pressure switch
■ Expansion valve not correctly connected
■
Service valve closed
■
Defective control board in F2040
■
Low or no flow during heating opera-
tion
■
Defective circulation pump
■
Defective fuse, F(4A)
The high pressure switch (63H1) deployed
5 times within 60 minutes or for 60
minutes continuously. HP alarm 220
■ Open circuit or short circuit on input for
low pressure sensor
■
Defective low pressure sensor
■
Defective control board in F2040
■ Open circuit or short circuit on input for
suction gas sensor (Tho-S)
■
Defective suction gas sensor (Tho-S)
Too low value on the low pressure sensor
3 times within 60 minutes. LP alarm 221
■
Any circuit breakers for F2040 off
■
Incorrect cable routing
Communication between the control
board and the communication board is
interrupted. There must be 22 volt direct
current (DC) at the switch CNW2 on the
control board (PWB1). OU Com. error 223
51 Chapter 9 | Alarm list F2040
9 Alarm list