Troubleshooting - Daikin EWAP110MBYNN Operation Manual

The changeable analog inputs are:
: indicates the status of the analog input
: indicates the status of the analog input
: indicates the status of the analog input
: indicates the status of the analog input
To check the inputs and outputs, proceed as follows:
1 Enter the
enter a menu" on page 6.)
The controller enters the first
2 Consult the other screens of the input/ouput menu using the g
and h keys.
Tasks of the user password menu
Changing the user password
Access to the user settings menu and the setpoints menu is
protected by the user password (a 4-digit number between
).
NOTE The default user password is
To change the user password, proceed as follows:
1 Enter the
enter a menu" on page 6).
The controller will request the password.
2 Enter the correct password using the g and h keys.
3 Press q to confirm the password and to enter the password
menu.
The controller requests the new password.
4 Press q to start the modification.
The cursor is positioned behind
5 Enter the new password using the g and h keys.
6 Press q to confirm the new password.
When the new password has been confirmed, the controller will
ask to enter the new password a second time (for safety
reasons). The cursor is positioned behind
7 Enter the new password again using the g and h keys.
8 Press q to confirm the new password.
NOTE The actual password will only be changed when the
new password and the confirmed password have the
same value.
If changed on one of the units in a DICN configuration,
this setting is automatically transferred to all the other
units in the network.
T
ROUBLESHOOTING
This section provides useful information for diagnosing and
correcting certain troubles which may occur in the unit.
Before starting the trouble shooting 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.
Operation manual
15
. (Refer to the chapter "How to
screen.
and
.
(Refer to the chapter "How to
.
.
Overview of safety messages
Message safety menu
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 cannot be
found, call your local dealer.
Symptom 1: The unit does not start, but the ON LED lights up
P
OSSIBLE CAUSES
The temperature setting is not
correct.
The flowstart timer is still running.
The circuit can not start up.
Unit is in manual mode (all
compressors at 0%).
Power supply failure.
Blown fuse or interrupted protection
device.
Loose connections.
Shorted or broken wires.
Symptom 2: The unit does not start, but the ON LED is flashing
P
OSSIBLE CAUSES
The remote ON/OFF input is
enabled and the remote switch is off.
Symptom 3: The unit does not start and the ON LED does not light up
3
P
OSSIBLE CAUSES
The unit is in failure mode.
One of the following safety devices is
activated:
• Flowswitch (S8L,S9L)
• Emergency stop
The ON LED is broken.
Symptom
3
5.7
5.8
13
13
13
5.6
5.3
5.9
5.1
5.6
5.2
13
13
11
12
10
13
13
5.7
C
ORRECTIVE ACTION
Check the controller setpoint.
The unit will start after approx. 15
seconds. Make sure that water is
flowing through the evaporator.
Refer to Symptom 4: The circuit
does not start up.
Check on the controller.
Check the voltage on the supply
panel.
Inspect fuses and protection
devices. Replace by fuses of the
same size and type (refer to
"Electrical specifications" on
page 1).
Inspect connections of the field
wiring and the internal wiring of the
unit. Tighten all loose connections.
Test circuits using a tester and repair
if necessary.
C
ORRECTIVE ACTION
Put the remote switch on or disable
the remote ON/OFF input.
C
ORRECTIVE ACTION
Refer to Symptom 5: One of the
following safety devices is activated.
Refer to Symptom 5: One of the
following safety devices is activated.
Contact your local dealer.
EWAP110~340MBYNN
Packaged air-cooled water chillers
4PW22677-1