Installation manual
7
R260A
Domestic hot water tank for air to water heat pump system
4PW56004-1
T
ROUBLESHOOTING
This section provides useful information for diagnosing and
correcting certain troubles which may occur in the unit.
General guidelines
Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as
loose connections or defective wiring.
When a safety device was activated, stop the unit 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 cannot be
found, call your local dealer.
General symptoms
Symptom 1: No water flow from hot taps
Symptom 2: Water from hot taps is cold
Symptom 3: Intermittent water discharge
D
ISPOSAL
REQUIREMENTS
Dismantling of the unit and treatment of parts must be done in
accordance with relevant local and national legislation.
T
ECHNICAL
SPECIFICATIONS
Domestic hot water tank specifications
When carrying out an inspection on the supply panel or on
the switch box of the unit, always make sure that the circuit
breaker of the unit is switched off.
P
OSSIBLE
CAUSES
C
ORRECTIVE
ACTION
The main water supply is off.
Check that all shut off valves of the
water circuit are completely open.
P
OSSIBLE
CAUSES
C
ORRECTIVE
ACTION
The thermal cut-out located in the
indoor unit has operated
• Check and find the cause of tripping
and then reset button.
• Check if thermistor is correctly
installed in thermistor socket.
Procedure: remove front panel and
insulation, replace or fix the sensor.
The indoor unit (RKHBRD) is not
operating.
Check the indoor unit operation.
Refer to the manual delivered with
the indoor unit.
If any faults are suspected, contact
your local dealer.
P
OSSIBLE
CAUSES
C
ORRECTIVE
ACTION
Thermal control failure (water will be
hot).
Contact your local dealer.
The expansion vessel is broken.
Replace the expansion vessel.
RKHTS200A
RKHTS260A
Storage capacity
(l)
200
260
Internal heat exchanger
volume
(l)
7.5
7.5
Material
Stainless steel
Stainless steel
Overall dimensions (h x l x w)
(mm)
1335 x 600 x 695
1610 x 600 x 695
Connections
Quick coupling/
G 3/4" F
Quick coupling/
G 3/4" F
Weight (empty)
70
78
Mounting
On top of
RKHBRD or floor
mounted
On top of
RKHBRD or floor
mounted
Maximum pressure domestic
hot water tank
(bar)
10
10
Maximum primary working
pressure (heating side)
(bar)
3
3
Maximum temperature
domestic hot water
(°C)
75
75
Maximum temperature heat
exchanger
(°C)
85
85
4PW56004-1 Page 7 Thursday, July 9, 2009 11:02 AM
