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T
ROUBLESHOOTING
This section provides useful information for diagnosing and correct-
ing 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.
Before contacting your local dealer, read this chapter carefully, it will
save you time and money.
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.
When a safety device was activated, stop the unit and find out why
the safety device was activated before resetting it. Under no circum-
stances 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
T
ECHNICAL SPECIFICATIONS
Domestic hot water tank specifications
Volume
Internal heat exchanger volume
Overall dimensions (Ø x H)
Booster heater, power supply
Booster heater, running current
Booster heater, capacity
Connections
Weight (empty)
Mounting
(a) FBSP = Female British Standard Pipe
EKHWS150~300BA3V3 + EKHWS200+300BA3Z2
Domestic hot water tank for air to water heat pump system
4P610547-1 – 2020.01
EKHWS150BA3V3
EKHWS200BA3V3
150 l
200 l
2 l
3 l
595 x 945 mm
595 x 1195 mm
230 V 50 Hz 1P
230 V 50 Hz 1P
13 A
13 A
3 kW
3 kW
(a)
3/4" FBSP
3/4" FBSP
41 kg
48 kg
Floor
Floor
General symptoms
Symptom 1: No water flow from hot taps
P
OSSIBLE CAUSES
The main water supply is off.
Symptom 2: Water from hot taps is cold
P
OSSIBLE CAUSES
The thermal cut-out(s) has/have
operated
The indoor unit (EKHBH/X) is not
operating.
Symptom 3: Intermittent water discharge
P
OSSIBLE CAUSES
Thermal control failure (water will be
hot).
The expansion vessel is broken.
EKHWS200BA3Z2
200 l
3 l
595 x 1195 mm
400 V 50 Hz 2P
7.5 A
3 kW
(a)
(a)
3/4" FBSP
48 kg
Floor
C
ORRECTIVE ACTION
Check that all shut off valves of the
water circuit are completely open.
C
ORRECTIVE ACTION
• Check and reset button(s).
• Check if thermistor is correctly
installed in thermistor socket.
Check the indoor unit (EKHBH/X)
operation. Refer to the manual
delivered with the indoor unit .
If any faults are suspected, contact
your local dealer.
C
ORRECTIVE ACTION
Switch off power to the indoor unit .
When discharge has stopped, check
the thermal controls and replace if
faulty.
Contact your local dealer.
Replace the expansion vessel.
EKHWS300BA3V3
EKHWS300BA3Z2
300 l
300 l
3 l
3 l
595 x 1645 mm
595 x 1645 mm
230 V 50 Hz 1P
400 V 50 Hz 2P
13 A
7.5 A
3 kW
3 kW
(a)
3/4" FBSP
3/4" FBSP
61 kg
61 kg
Floor
Floor
Installation manual
(a)
7
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