Nibe F1245 Service Manual

Base card (AA2)
IndicationLED
A steady light means that 12 V is OK.Power:
Green
Flashing once/sec. Indicates that the pro-
cessor is OK.
Run: Green
Flashes irregularly during communication.Com: Green
Continuous light during active output.PWM1: Or-
ange
Continuous light during active output.PWM2: Or-
ange
A steady light means that the relevant relay
is engaged.
K1 - K4: Or-
ange
FunctionOutput
Control signal HM pump (GP1)PWM1
Control signal brine pump (GP2)PWM2
Reversing valve (QN10)K1
Brine pump (GP2)K2
HM pump (GP1)K3
Compressor heater (EB10) (inverted signal)K4
Input circuit board (AA3)
IndicationLED
A steady light means that 12V is OK.Power:
Green
Flashing once/sec. Indicates that the pro-
cessor is OK.
Run: Green
Flashes irregularly during communication.Com: Green
Continuous light during active output.PWM1: Or-
ange
Continuous light during active output.PWM2: Or-
ange
A steady light means that the relevant relay
is engaged.
K1 - K4: Or-
ange
Soft-start card (AA10)
Soft-start card (AA10)
3x230 V 6 - 10 kW
IndicationLED
A steady light indicates that there is control
voltage (230 V).
On: Yellow
Steady light during compressor operation
but first 7 seconds after the compressor
starts.
Bypass: Yel-
low
3x400 V
IndicationLED
A steady light means that incoming 12V is
OK.
Power:
Green
Steady light for approx 10 secs at start-up.
Flashes 3 x/3 secs during communication.
Com: Green
Shows alarm status.
1 flash: Phase 1 missing
2 flash: Phase L2 missing
3 flash: Phase L3 missing
4 flash: Motor protection deployed
Continuous light: Incorrect phase sequence
Error: Red
Steady light when the compressor is active.Compr. on:
Orange
Bypass bridge installed (alarm ignored).Bypass: Or-
ange
25Chapter 5 | Component descriptionF1245

Nibe F1245 Specifications

General

Brand	Nibe
Model	F1245
Category	Heat Pump
Language	English