RKBW1
Heater kit for air to water heat pump system
4PW58904-1
Installation and operation manual
10
T
ROUBLESHOOTING
This section provides useful information for diagnosing and
correcting certain troubles which may occur in the heater kit.
This troubleshooting and related corrective actions may only be
carried out by your local Rotex technician.
General guidelines
Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the heater kit and look for obvious defects such
as loose connections or defective wiring.
When a safety device was activated, stop the heater kit and find out
why the safety device was activated before resetting it. Under no
circumstances safety devices may be bridged or changed to a value
other than the factory setting. If the cause of the problem can not be
found, call your local dealer
.
General symptoms
Symptom 1: Space heating capacity shortage at low outdoor
temperatures
Error codes
When a safety device is activated, the user interface LED will be
flashing, and an error code will be displayed.
A list of all errors and corrective actions can be found in the table
below.
For more details regarding error codes, refer to chapter "Error codes"
in the installation manual of the indoor unit.
T
ECHNICAL
SPECIFICATIONS
D
ISPOSAL
REQUIREMENTS
Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with the applicable legislation.
Your product is marked with this symbol. This means that
electrical and electronic products shall not be mixed with
unsorted household waste.
Do not try to dismantle the system yourself: the dismantling of the
system, treatment of the refrigerant, of oil and other parts must be
done by a qualified installer in accordance with the applicable
legislation.
Units must be treated at a specialized treatment facility for re-use,
recycling and recovery. By ensuring this product is disposed off
correctly, you will help to prevent potential negative consequences for
the environment and human health. Please contact the installer or
local authority for more information.
WARNING
■
Before carrying out any maintenace or repair activity,
always switch off the circuit breaker on the supply
panel or remove the fuses.
■
Do not touch water pipes during and immediately after
operation as the pipes may be hot. Your hands may
suffer burns. To avoid injury, give the piping time to
return to normal temperature or be sure to wear
proper gloves.
■
Do not touch internal parts during and immediately
after operation. Your hands may suffer burns. To avoid
injury, give the piping time to return to normal
temperature or be sure to wear proper gloves.
P
OSSIBLE
CAUSES
C
ORRECTIVE
ACTION
The heater kit is not activated.
Check that the "heater kit operation
status" field setting [6-02] is turned
on, see "Field settings" in the
operation manual of the indoor unit.
The over current fuse has operated.
Check and switch over current fuse
back on.
The thermal protector has operated.
Check and reset the thermal
protector by pushing the button.
The thermal fuse has operated.
Check if the thermal fuse is open.
There is air in the system.
Purge air.
Broken contactor.
Check contactors and relays by use
of an ohmmeter.
Error
code
Failure cause
Corrective action
AA
Heater kit thermal protector or
thermal fuse error
• Make sure the circuit is filled
with water (no air inside).
• Make sure waterflow is
possible (open all valves in the
circuit).
Heater kit connected to the
benefit kWh rate power supply
Make sure the heater kit is
connected to a normal power
supply.
V3
W1
Heater capacity
• step 1
(kW)
3
2
• step 2
(kW)
6
6
Dimensions H x W x D
(mm)
575 x 415 x 170
Weight
(kg)
12
Connections
• water inlet
G 1"1/4 (male)
• water outlet
G 1"1/4 (female)
Maximum water pressure
(bar)
3
Power supply
• Phase
1~
3N~
• Frequency
(Hz)
50
• Voltage range
Minimum
Maximum
(V)
(V)
220
240
380
415
• Voltage tolerance
–10%/+6%
• Maximum running current
(A)
26.1
8.7
• Recommended field fuse
(A)
32
16
4PW58904-1_offset.book Page 10 Monday, February 22, 2010 9:59 AM
