Fault indicated by code
Code Fault type
Reset
Intake type
Cut-off
Intake value
Automatic
Manual
Digital
Analogue
Softwar
e
parameter
Compr
essors
Condenser
fan
Cir
culation
pump
Anti-fr
eeze
heating, cooling medium
P1
Temperature sensor medium intake defective
PB1
x
x
x
x
x
P2
Temperature sensor medium outlet defective
PB2
x
x
x
x
x
P3
Temperature sensor condenser defective
PB3
x
x
x
x
x
P4
not possible
PB4
x
x
x
x
x
A01
High pressure sensor
HD1/HD2
x
x
x
A02
Low pressure sensor
ND1 <2/hrs <2/hrs
x
x
x
A03
Insufficient temperature medium intake
PB1
x
A04
Insufficient temperature medium outlet
PB2
x
A05
Excessive temperature condenser
x
x
x
A06
Excess temperature condenser
<2/hrs <2/hrs
x
x
x
A07
Anti-freeze protection has responded
x
x
x
x
A08
Differential pressure switch has responded
<2/hrs <2/hrs
x
x
x
x
A09
Excess temperature compressor 1
x
A10
Excess temperature compressor 2
x
A11
Excessive temperature condenser fan
x
A12
Defrosting period exceeded
x
dF07
A13
Maintenance interval compressor 1
Co14
500 hrs
x
A14
Maintenance interval compressor 2
Co15
500 hrs
x
A15
Maintenance interval circulation pump
Co16
500 hrs
x
EE
EEPROM defective
x
x
x
x
x
x
ACF1 Configuration error
x
x
x
x
x
x
ACF2 Configuration error
x
x
x
x
x
x
ACF3 Configuration error
x
x
x
x
x
x
ACF4 Configuration error
x
CF28
x
x
x
x
AFr
Power supply
x
x
x
x
x
x
Reset
1. Faults with automatic reset:
The resetting of the alarm takes place automatically.
2. Faults with manual reset:
The resetting of the alarm can only be carried out by a specialist after the fault has been corrected.
3. Faults with semi-manual reset: The reset is first carried out automatically, afterwards only a manual reset is possible by a specialist,
after the fault has been corrected.
Fault
Code
Possible cause
check
Remedial measures
The unit
does not
start or
switches
itself off.
ACF1
Configuration error
The unit was configured with HP
function but without reversing valve.
Have specialist check regulation or
parameters.
ACF2
Configuration error
No configuration of the condenser
controller. Check parameters CF01
+ FA02
Have specialist check regulation or
parameters.
ACF3
Configuration error
2 digital inputs have the same function Have specialist check regulation or
parameters.
ACF4
Configuration error
Digital input not configured.
Check parameters CF28 + CF07.
Have specialist check regulation or
parameters.
AFr
Frequency alarm
The mains frequency lies beyond the
the permissible range
Have the mains supply checked
by a specialty firm
EE
EEprom controller error
Does the controller operate properly?
Have specialist check regulation or
parameters.
Malfunctions
17
Summary of Contents for KWL 130
Page 2: ......