Daikin EWWD120MBYNN Operation Manual page 20

5.8
Symptom 5.8: Compressor thermal protector is activated
P
OSSIBLE CAUSES
Compressor motor coil temperature
too high.
RESET
Symptom 6: Unit stops soon after operation
P
OSSIBLE CAUSES
The schedule timer is activated and
is in off mode.
One of the safety devices is
activated.
Voltage is too low.
Symptom 7: Unit runs continuously and the water temperature remains
higher than the temperature set on the controller
P
OSSIBLE CAUSES
The temperature setting on the
controller is too low.
The heat production in the water
circuit is too high.
Water flow is too high.
The circuit is limited.
Symptom 8: Excessive noises and vibrations of the unit
P
OSSIBLE CAUSES
Unit has not been fixed properly.
Symptom 9: The display shows
P
OSSIBLE CAUSES
The adresses set on the PCB or
controller are wrong.
Symptom 10: The
10
P
OSSIBLE CAUSES
A unit can not be found by the DICN
system.
The EEV driver can not be found by
the unit system.
Symptom 11: The alarm message shows
11
P
OSSIBLE CAUSES
The control motor is not reacting due
to bad wiring to the motor or the
motor is damaged.
Symptom 12: The alarm message shows
12
P
OSSIBLE CAUSES
The control motor is operating in
reverse due to wrong wiring.
Operation manual
19
C
ORRECTIVE ACTION
Compressor is not cooled sufficiently
by the refrigerant medium.
After temperature decrease the
thermal protector is reset
automatically, but the circuit
controller needs to be reset.
If the protector is activated
frequently, call your local dealer.
C
ORRECTIVE ACTION
Work according to the settings in the
schedule timer or disable the
schedule timer.
Check safety devices (refer to
Symptom 5: One of the following
safety devices is activated).
Test the voltage in the supply panel
and, if necessary, in the electrical
compartment of the unit (voltage
drop due to supply cables is too
high).
C
ORRECTIVE ACTION
Check and adjust the temperature
setting.
The cooling capacity of the unit is too
low. Call your local dealer.
Recalculate the water flow.
Check the "enable/disable capacity
limitation" remote contact.
C
ORRECTIVE ACTION
Fix the unit as described in the
installation manual.
(only in a DICN system)
C
ORRECTIVE ACTION
Make sure to set the correct
adresses. Refer to "Setting the
adresses" in the installation manual.
message shows
C
ORRECTIVE ACTION
Make sure all units in the DICN
system are powered or make sure
the correct number of slaves is
defined in the master unit.
Check the wiring. Call your local
dealer.
C
ORRECTIVE ACTION
Check if the wiring to the control
motor is correct and not damaged or
loose.
C
ORRECTIVE ACTION
Check if the wiring is according to
the wiring diagram.
Symptom 13: Sensor or transmitter error
13
P
OSSIBLE CAUSES
The wiring is wrong.
Symptom 14: The alarm message shows
14
P
OSSIBLE CAUSES
The alarmmessage indicates a
error code.
The suction temperature sensor is
not well mounted in the suction pipe.
The alarm message indicates a
or errorcode.
Symptom 15: The alarm message shows
15
P
OSSIBLE CAUSES
The expansion board controller
(A11P) can not be found.
C
ORRECTIVE ACTION
Check if the wiring is according to
the wiring diagram. Call your local
dealer.
C
ORRECTIVE ACTION
Check the suction temperature
sensor and make sure that it is
properly mounted in its holder on the
suction pipe. Call your local dealer.
Call your local dealer.
C
ORRECTIVE ACTION
Check if the wiring to the expansion
board controller (A11P) is according
to the wiring diagram. Call your local
dealer.
EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22685-1