Daikin EWWD120MBYNN, Operation Manual

Operation manual

17

EWWD120~540MBYNN

Packaged water-cooled water chillers

4PW22685-1

The changeable relay outputs are:

■

:  indicates whether the unit is running in

cooling or in heating.

■

: indicates the status of the second evaporator

pump.

■

: indicates the status of the condenser pump.

■

$$+

: indicates when the unit is working at 100%.

■

:  indicates the closed status of the changeable

digital output.

The changeable analog inputs are:

■

 $8

: indicates the status of the analog input

■

$$

: indicates the status of the analog input

■

 $8

: 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 

.

(Refer to the chapter 

"How to

enter a menu" on page 8

.)

The controller enters the first 

 screen.

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 

$$$$

 and

,,,,

).

To change the user password, proceed as follows:

1

Enter the 

 (Refer to the chapter 

"How to

enter a menu" on page 8

).

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.

T

ROUBLESHOOTING

This section provides useful information for diagnosing and correct-
ing 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 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.

Overview of safety messages

NOTE

The default user password is 

#%

.

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.

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.

Message safety menu

Symptom

$$

3

$  

5.6

$%9

5.7

$,    

13

$  

13

$    

13

$% 0

15

or 

5.4

#  

5.3

'  

5.8

&

5.1

#  

5.5

%  

5.2

%9

5.7

:  

13

:  

13

13

,  

10

,  

14

,  

14

,  

14

,  

13

,#

11

,%

12

5.6

$%  

10

$  

13

$,    

13

$  

5.6