REMKO RVS 60 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 equip-
ment 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
cycle 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.
Medium intake temperature or
parameter setting wrong
Check setting. Change setting.
No alarm / fault
Check the contact "external
enable"
Open / close
the contact being used.
E1 Medium intake probe defective Check resistance at B1 Replace defective probe.
E2 Medium outlet probe defective Check resistance at B2 Replace defective probe.
E3 Condenser probe defective Check resistance at B3 Replace defective probe.
E4
Outdoor temperature probe
Cooling cycle pressure transducer
defective
Check resistance/voltage at B4 Replace defective tranceducer.
HP1
High pressure fault Compressor relay switched on? Have checked by a specialist.
High pressure fault
Are the fans turning?
Is the condenser's air intake free
of obstacles?
Have checked by a specialist.
High pressure fault at pressure
tranceducer PT
Is the value at B4 greater than
40 bar?
Have checked by a specialist.
LP1 Low pressure fault
Is the pressure in the cooling
cycle OK?
Have checked by a specialist.
Ht
Excessive temperature medium
intake
Is the return temperature greater
than 50°C?
Reduce temperature of the
medium
Excessive temperature con-
denser
Are the fans turning?
Is the condenser's air intake free
of obstacles?
Have checked by a
specialist.
Excess temperature condenser
Have the operating temperatures
been exceeded?
Shut down the system.
A1
Antifreeze alarm has
responded
Is the supply temperature greater
than or less than 4°C?
Increase return temperature,
Increase medium flow volume,
Set frost protection temp..
Medium volume in the system
too low
Has the minimum medium vol-
ume been complied with?
Comply with minimum medium
volume e.g. in the reservoir.
FL
Differential switch /
Flow switch
has responded
Are the following points OK:
- Medium flow volume
- No air in the medium lines
- Output of the circulation pump
- Does the flow switch operate
- Shut-off devices open
- Medium pressure to low
Have checked by a
specialist.
D1 Fault defrosting
Maximum defrosting duration
exceeded
Have checked by a specialist.
Hc1 Compressor 1 maintenance
Maintenance interval compressor
1 has been reached.
After maintenance by a special-
ist reset of the operating hours
see chapter "Querying the
operating status".
Malfunctions
REMKO RVS...H (INOX)
16