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Operation manual

19

EWWP045~06 ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

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.

Symptom 1: The unit does not start, but the ON LED lights up

Symptom 2: The unit does not start, but the ON LED is flashing

Symptom 3: The unit does not start and the ON LED does not light up

Symptom 4: One of the circuits does not start up

Symptom 5: One of the following safety devices is activated

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.

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

The temperature setting is not 
correct.

Check the controller setpoint.

The flowstart timer is still running.

The unit will start after approx. 15 
seconds. Make sure that water is 
flowing through the evaporator.

Neither one of the circuits can start 
up.

Refer to 

Symptom 4: One of the 

circuits does not start up

.

Unit is in manual mode (all 
compressors at 0%).

Check on the controller.

Power supply failure.

Check the voltage on the supply 
panel.

Blown fuse or interrupted protection 
device.

Inspect fuses and protection 
devices. Replace by fuses of the 
same size and type (refer to 

"Electrical specifications" on 
page 2

).

Loose connections.

Inspect connections of the field 
wiring and the internal wiring of the 
unit. Tighten all loose connections.

Shorted or broken wires.

Test circuits using a tester and repair 
if necessary.

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

The remote ON/OFF input is 
enabled and the remote switch is off.

Put the remote switch on or disable 
the remote ON/OFF input.

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

All circuits are in failure mode.

Refer to 

Symptom 5: One of the 

following safety devices is activated

.

One of the following safety devices is 
activated:

• Flow switch (S8L,S9L)
• Emergency stop

Refer to 

Symptom 5: One of the 

following safety devices is activated

.

The ON LED is broken.

Contact your local dealer.

The unit is in bypass mode.

Check the bypass remote contact.

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

One of the following safety devices is 
activated:

• Compressor thermal protector (Q*M)
• Overcurrent relay (K*S)
• Discharge thermal protector (S*T)
• Low pressure switch 
• High pressure switch (S*HP)
• Reverse phase protector (R*P)
• Freeze-up

Check on the controller and refer to 

Symptom 5: One of the following 
safety devices is activated

.

The anti-recycling timer is still active.

The circuit can only start up after 
approximately 10 minutes.

The guard timer is still active.

The circuit can only start up after 
approximately 1 minute.

The circuit is limited to 0%.

Check the "enable/disable capacity 
limitation" remote contact.

Symptom 5.1:  Overcurrent relay of compressor

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

Failure of one of the phases.

Check fuses on the supply panel or 
measure the supply voltage.

Voltage too low.

Measure the supply voltage.

Overload of motor.

Reset. If the failure persists, call your 
local dealer.

RESET

Push the blue button on the over-
current relay inside the switch box 
and reset the controller.

Symptom 5.2:  Low pressure switch 

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

Water flow to water heat exchanger 
too low.

Increase the water flow.

Shortage of refrigerant.

Check for leaks and refill refrigerant, 
if necessary.

Unit is working out of its operation 
range.

Check the operation conditions of 
the unit.

Inlet temperature to the water heat 
exchanger is too low.

Increase the inlet water temperature.

Flow switch is not working or no 
water flow.

Check the flow switch and the water 
pump.

RESET

After pressure rise, this safety resets 
automatically, but the controller still 
needs to be reset.

Symptom 5.3:  High-pressure switch

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

Water flow to condenser is too low.

Increase the water flow and/or check 
the strainer for clogging.

RESET

After finding the cause, push the 
button on the high-pressure switch 
housing and reset the controller.

Symptom 5.4:  Reverse phase protector is activated

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

Two phases of the power supply are 
connected in the wrong phase 
position.

Invert two phases of the power 
supply (by licensed electrician).

One phase is not connected 
properly.

Check the connection of all phases.

RESET

After inverting two phases or fixing 
the power supply cables properly, 
the protector is reset automatically, 
but the controller still needs to be 
reset.

Symptom 5.5:  Discharge thermal protector is activated

P

OSSIBLE

 

CAUSES

C

ORRECTIVE

 

ACTION

Unit is working outside the operation 
range.

Check the operation condition of the 
unit.

RESET
After temperature decrease, the 
thermal protector resets 
automatically but the controller still 
needs to be reset.

Summary of Contents for EWWP045KAW1M

Page 1: ...OPERATION MANUAL EWWP045KAW1M EWWP055KAW1M EWWP065KAW1M ECB1MUW ECB2MUW ECB3MUW Packaged water cooled water chillers...

Page 2: ...arting up the unit for the first time make sure that it has been properly installed It is therefore necessary to carefully read the installation manual supplied with the unit and the recommendations l...

Page 3: ...nning current A 10 4 13 1 15 0 10 4 10 4 13 1 13 1 13 1 15 15 10 4 13 1 10 4 13 1 13 1 13 1 15 13 1 15 15 27 11 23 26 500 500 500 2 3 1 4 20 17 12 13 24 21 18 25 16 22 19 28 28 28 8 5 6 9 7 10 15 14 1...

Page 4: ...denser removes small particles from the refrigerant to prevent blockage of the tubes Expansion valve The liquid refrigerant coming from the condenser enters the evaporator via an expansion valve The e...

Page 5: ...rough the water heat exchanger an interlock contact S11L of e g a flow switch must be installed in the start up circuit of the unit Internal wiring Parts table Refer to the internal wiring diagram sup...

Page 6: ...ommendations Before switching on the unit read following recommendations 1 When the complete installation and all necessary settings have been carried out close all front panels of the unit 2 The serv...

Page 7: ...ter a few minutes consult the actual operational information available in the list of direct parameters Also refer to the chapter Troubleshooting on page 19 Switching the unit off To switch the unit o...

Page 8: ...he parameter codes 5 To consult other actual operational information repeat from instruction 2 onwards 6 To return to normal operation press the E key or wait approximately 40 seconds In the first cas...

Page 9: ...s of the user password When scrolling through the list of parameters using the A and or Z key you see the direct parameters and user parameters The user parameters appear in the following order d to d...

Page 10: ...g on the setting of user parameter d all temperature values are displayed in C or in F The conversion formulas from C to F and vice versa are T C T F 32 1 8 T F T C x 1 8 32 If user parameter d is set...

Page 11: ...ars on the display Enabling or disabling the buzzer When an alarm is detected the buzzer is activated for the period defined by user parameter p4 The default limit and step values for the activation p...

Page 12: ...arameter code h9 using the A and or Z key 3 Press the R key to switch to the parameter value 4 Select the appropriate setting using the A and or Z key 5 Press the R key to return to the list of parame...

Page 13: ...and an initialization cycle is started Once all the timers have reached zero the unit starts up When a remote ON OFF switch is configured the following table applies 2 When the unit is started up for...

Page 14: ...ture of condenser setpoint 2 In double thermostat operation two setpoints are reserved for inlet control of the evaporator and two others are reserved for inlet control of the condenser INLSETP 1 E in...

Page 15: ...information i e the number of times a unit safety or a circuit safety occurred and the unit status at the moment of shutdown can be checked by means of the history menu To consult actual operational...

Page 16: ...SOR TIMERS COMPR STARTED 00s BC COMPRESSOR TIMERS C11 GRD 000s AR 000s C12 GRD 000s AR 000s C21 GRD 000s AR 000s BW COMPRESSOR TIMERS C22 GRD 000s AR 000s C31 GRD 000s AR 000s C32 GRD 000s AR 000s BX...

Page 17: ...SETTINGS screen of the user settings menu The default limit and step values for the thermostat parameters are Defining the lead lag mode The lead lag mode determines which module starts up first in ca...

Page 18: ...ow through the evaporator stops after the flowstart timer has reached zero If the water flow has not restarted during the countdown the unit will shut down PUMPLEAD PUMPLEAD refer to the pump control...

Page 19: ...l setpoint switch setpoint 1 or setpoint 2 REM ON OFF indicates the status of the remote on off switch CAP LIM1 2 3 indicates the status of the enable disable capacity limitation switch es The locked...

Page 20: ...ivated The ON LED is broken Contact your local dealer The unit is in bypass mode Check the bypass remote contact POSSIBLE CAUSES CORRECTIVE ACTION One of the following safety devices is activated Comp...

Page 21: ...ter filters Check if the mesh width is 1 mm maximum Disposal requirements Dismantling of the unit treatment of the refrigerant oil and any other parts should be done in accordance with the relevant lo...

Page 22: ...t control default 32 48Hp 4 step thermostat control default 32 48Hp 6 step thermostat control default 52 72Hp 6 step thermostat control default 52 72Hp 0 1 2 a b Stepnumber Setpoint Temperature 0 1 2...

Page 23: ...group settings of groups G1 G2 G3 G4 and H work similar as following example settings for group 1 MARCH MON TUE WED THU FRI SAT SUN 1 G1 2 G1 3 G2 4 G1 5 G1 6 G3 7 G3 8 G1 9 G1 10 G2 11 G1 12 G1 13 G...

Page 24: ...HAS STOPPED OUTE1 07 0 C OUTE3 OUTE2 07 0 C 07 0 C e UNIT HISTORY 003 0AE FLOW HAS STOPPED C11 OFF SAF C21 C12 OFF SAF OFF SAF e UNIT HISTORY 003 0AE FLOW HAS STOPPED C22 OFF SAF C32 C31 OFF OFF e UN...

Page 25: ...NOTES NOTES...

Page 26: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW30041 1A...

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