REMKO KWL 130 H - Manual (Page 16)

Fault Code Possible cause check Remedial measures
The unit
does not
start or
switches
itself
off.
Mains failure
Does all other electrical
equipment function correctly?
Check voltage and if necessary
wait until turned on again.
Unit's breaker/mains switch
turned off
Is voltage available to the unit?
Switch on unit's breaker/ main
circuit breaker
Wait time too short Is the compressor icon flashing? Plan for longer wait period.
Mains current has incorrect
direction of rotation.
Has the phase sequence relay
switched?
Change direction of rotation.
Controller is not working
Is the icon for cooling mode,
heating mode or Stand-By mode
illuminated?
Energise and select operating
mode.
Return temperature or
parameter setting wrong
Check setting. Change setting.
OFF No alarm / fault
Check the closed
contact "external enabling"
Open / close
the contact being used.
P1 Medium intake sensor defective Check resistance at PB1 Replace defective sensor.
P2 Medium outlet sensor defective Check resistance at PB2 Replace defective sensor.
P3 Condenser sensor defective Check resistance at PB3 Replace defective sensor.
P4 Outdoor temperature sensor defective Check resistance at PB4 Replace defective sensor.
A01
High pressure fault Heat mode set?
Set summer mode (cooling
mode).
High pressure fault
Are the fans turning?
Is the condenser's air intake free
of obstacles?
Have checked by a specialist.
A02 Low pressure fault
Is the pressure in the cooling
circuit OK?
Have checked by a specialist.
A05
Excessive temperature
condenser
Are the fans turning?
Is the condenser's air intake free
of obstacles?
Have checked by a specialist.
A06 Excess temperature condenser
Have the operating temperatures
been exceeded?
Shut down the system.
A07
Anti-freeze protection has
responded
Is the supply temperature greater
than or less than 4°C?
Increase return temperature,
Increase medium flow,
Set anti-freeze protection temp..
Medium volume in the system
too low
Has the minimum medium
volume been complied with?
Comply with minimum medium
volume e.g. in the reservoir.
A08
Differential pressure switch /
Flow monitor
has responded
Are the following points
OK:
- Medium flow
- No air in the medium lines
- Capacity of the circulation pump
- Does the differential pressure
flow monitor switch
- Shut-off devices open
- Medium pressure to low
Have checked by a specialist.
A12 Fault defrosting
Maximum defrosting duration
exceeded
Have checked by a specialist.
A13 Compressor 1 maintenance
Maintenance interval compressor
1 has been reached (500 op.hrs.)
After maintenance by a specialist reset
of the operating hours see chapter
"Querying the operating status".
A14 Compressor 2 maintenance
Maintenance interval compressor
2 has been reached (500 op.hrs.)
After maintenance by a specialist reset
of the operating hours see chapter
"Querying the operating status".
A15 Circulation pump maintenance
Circulation pump maintenance
interval has been reached
(500 op.hrs.)
After maintenance by a specialist reset
of the operating hours see chapter
"Querying the operating status".
Malfunctions
REMKO KWL (H)
16