Daikin EKHVH008BB6V3, Installation Manual

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EKHVH/X00 EKHVH/9WN
Daikin Altherma indoor unit
4PW64329-1 – 07.2010
Installation manual
41
Maintenance and service
The described checks must be executed at least once a year .
1 Water pressure
Check if the water pressure is above 1 bar. If necessary add
water.
2 Water filter
Clean the water filter.
3 Water pressure relief valve
Check for correct operation of the pressure relief valve by
turning the red knob on the valve counter-clockwise:
■
If you do not hear a clacking sound, contact your local dealer.
■
In case the water keeps running out of the unit, close both
the water inlet and outlet shut-off valves first and then contact
your local dealer.
4 Pressure relief valve hose
Check that the pressure relief valve hose is positioned
appropriately to drain the water.
If the (optional) drain pan kit is installed, make sure that the
pressure relief valve hose end is positioned in the drain pan.
5 Backup heater vessel insulation cover
Check that the backup heater insulation cover is fastened tightly
around the backup heater vessel.
6 Domestic hot water tank pressure relief valve (field supply)
Applies only to installations with a domestic hot water tank.
Check for correct operation of the pressure relief valve on the
domestic hot water tank.
7 Indoor unit switch box
■
Carry out a thorough visual inspection of the switch box and
look for obvious defects such as loose connections or
defective wiring.
■
Check for correct operation of contactors K1M, K2M, K3M,
K5M (applications with domestic hot water tank only) and
K4M by use of an ohmmeter. All contacts of these contactors
must be in open position.
11. T
ROUBLESHOOTING
This section provides useful information for diagnosing and correcting
certain troubles which may occur in the unit.
This troubleshooting and related corrective actions may only be
carried out by your local installer.
11.1. 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 can not be
found, call your local dealer
.
If the pressure relief valve is not working correctly and is to be
replaced, always reconnect the flexible hose attached to the pressure
relief valve, to avoid water dripping out of the unit!
WARNING
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similary qualified
persons to avoid a hazard.
Refer to the service manual to carry out any service mode
operation.
WARNING
When carrying out an inspection on the switch box of the
unit, always make sure that the main switch of the unit is
switched off.
DANGER: ELECTRIC SHOCK
See "2. General safety precautions" on page 2 .
WARNING
In order to avoid a hazard due to inadvertent resetting of
the thermal cut-out, this appliance must not be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly switched on and off
by the utility.
DANGER: DO NOT TOUCH PIPING AND INTERNAL
PARTS
■
Do not touch water pipes during and immediately after
operation as the pipes may be hot.
■
Do not touch the refrigerant pipes during and
immediately after operation as the refrigerant pipes
may be hot or cold, depending on the condition of the
refrigerant flowing through the refrigerant piping,
compressor, and other refrigerant cycle parts.
■
Do not touch the internal parts (pump, backup heater,
etc.) during and immediately after operation.
See "2. General safety precautions" on page 2 .
For problems related to the optional solar kit for domestic
water heating, refer to the troubleshooting in the
installation manual of that kit.