Daikin EKHWS-BA3Z2, Installation Manual

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EKHWS150~30 E300BA3Z2
Domestic hot water tank for air to water heat pump system
4P610547-1 – 2020.01
Installation manual
7
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 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
General symptoms
Symptom 1: No water flow from hot taps
Symptom 2: Water from hot taps is cold
Symptom 3: Intermittent water discharge
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(s) has/have
operated • Check and reset button(s).
• Check if thermistor is correctly
installed in thermistor socket.
The indoor unit (EKHBH/X) is not
operating. 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.
P
OSSIBLE CAUSES
C
ORRECTIVE ACTION
Thermal control failure (water will be
hot). Switch off power to the indoor unit .
When discharge has stopped, check
the thermal controls and replace if
faulty.
Contact your local dealer.
The expansion vessel is broken. Replace the expansion vessel.
EKHWS150BA3V3 EKHWS200BA3V3 EKHWS200BA3Z2 EKHWS300BA3V3 EKHWS300BA3Z2
Volume 150 l 200 l 200 l 300 l 300 l
Internal heat exchanger volume 2 l 3 l 3 l 3 l 3 l
Overall dimensions (Ø x H) 595 x 945 mm 595 x 1195 mm 595 x 1195 mm 595 x 1645 mm 595 x 1645 mm
Booster heater, power supply 230 V 50 Hz 1P 230 V 50 Hz 1P 400 V 50 Hz 2P 230 V 50 Hz 1P 400 V 50 Hz 2P
Booster heater, running current 13 A 13 A 7.5 A 13 A 7.5 A
Booster heater, capacity 3 kW 3 kW 3 kW 3 kW 3 kW
Connections 3/4" FBSP
(a)
3/4" FBSP
(a)
3/4" FBSP
(a)
3/4" FBSP
(a)
3/4" FBSP
(a)
Weight (empty) 41 kg 48 kg 48 kg 61 kg 61 kg
Mounting
Floor Floor Floor Floor Floor
(a) FBSP = Female British Standard Pipe
4PEN610457-1.book Page 7 Tuesday, February 25, 2020 4:15 PM