Daikin EKHBX008BB3V3S, Installation Manual

Page: 49 / 64

EKHBX008BB3V3S
Indoor unit for air to water heat pump system
4PW62597-1 – 10.2010
Installation manual
46
Symptom 4: The water pressure relief valve opens
Symptom 5: The water pressure relief valve leaks
Symptom 6: The user interface displays " n n
n n
" when
pressing certain buttons
Symptom 7: Space heating capacity shortage at low outdoor
temperatures
Symptom 8: [4-03] and maximum tank set point is not according
to the applicable tank
1. In case of domstic hot water tank with built-in electrical booster
heater (EKHW*) and [4-03]=5 or maximum domestic hot water
set point is 60°C, the wrong field setting and logic is activated
according to the applicable tank.
2. In case of domestic hot water tank without electrical booster
heater (EKHTS) and [4-03]
≠
5 or maximum domestic hot water
set point is 78°C, the wrong field setting and logic is activated
according to the applicable tank.
Symptom 9: Temperature values displayed on the remote
controller (user interface) are displayed in °F instead of °C
P
OSSIBLE CAUSES
C
ORRECTIVE ACTION
The expansion vessel is broken. Replace the expansion vessel.
The water volume in the installation
is too high. Make sure that the water volume in
the installation is under the
maximum allowed value (refer to
"Checking the water volume and
expansion vessel pre-pressure" on
page 16
).
P
OSSIBLE CAUSES
C
ORRECTIVE ACTION
Dirt is blocking the water pressure
relief valve outlet. 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.
P
OSSIBLE CAUSES
C
ORRECTIVE ACTION
The current permission level is set to
a level that prevents using the
pressed button. Change the "user permission level"
field setting [0-00], see
"8.9. Field
settings" on page 26 .
P
OSSIBLE CAUSES
C
ORRECTIVE ACTION
Backup heater operation is not
activated. Check that the "backup heater
operation status" field setting [4-00]
is turned on, see
"8.9. Field settings"
on page 26 .
Check whether or not the thermal
protector of the backup heater has
been activated (refer to
Main
components , "17. Backup heater
thermal protector" on page 11 for
location of the reset button).
Check if booster heater and backup
heater are configured to operate
simultaneously (field setting [4-01],
see
"8.9. Field settings" on page 26 ).
Check whether or not the thermal
fuse of the backup heater is blown
(refer to
"Main components" ,
"18. Backup heater thermal fuse" on
page 11
for location of the reset
button).
The backup heater equilibrium
temperature has not been
configured correctly. Raise the
'
equilibrium temperature
'
field setting [5-01] to activate backup
heater operation at a higher outdoor
temperature.
Too much heat pump capacity is
used for heating domestic hot water
(applies only to installations with a
domestic hot water tank). Check that the ' space heating priority
temperature
'
field settings are
configured appropriately:
• Make sure that the 'space heating
priority status' field setting [5-02] is
enabled.
• Raise the 'space heating priority
temperature' field setting [5-03] to
activate booster heater operation
at a higher outdoor temperature.
P
OSSIBLE CAUSES
C
ORRECTIVE ACTION
At the time of setting DIP switch
SS2-2, wrong field wiring caused
wrong detection of tank type. Check all field wiring between indoor
unit and tank switch box.
Reset procedure
• Power off the indoor unit and put
SS-2 to OFF.
• Power on the indoor unit, it means
that the indoor unit will detect no
domestic hot water tank.
• Power off the indoor unit and put
SS2-2 to ON again.
• Power on the indoor unit and the
the indoor unit will detect again the
type of tank: tank with built-in
electrical booster heater
(EKHW*)([4-03] default value will
be 3),
or tank without electrical
booster heater (EKHTS)([4-03]
default value will be 5).
P
OSSIBLE CAUSES
C
ORRECTIVE ACTIONS
You accidentally changed the setting
to view the temperature values in °F
by pushing the
ib
and
jb
buttons simultaneously.
To change the display back to °C,
push
ib and jb buttons
simultaneously for 5 seconds.
Execute same procedure to change
back to the °F display. The default
temperature display is in °C.