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Troubleshooting
ESIE11-02
3–24
3
1
3
4
5
4.2
Items to Be Checked
Introduction
The tables below contain the most frequent failures and their corresponding corrective action:
■
In case the unit does not start and there is no malfunction indication.
■
In case the unit does not start and there is a malfunction indication.
No malfunction
indication
The unit does not start and there is no malfunction indication:
Malfunction
indication
The unit does not start and there is a malfunction indication:
Possible causes
Items to be checked
Power supply problem:
■
Main supply
■
Control system supply
■
PCB supply (for EUWA*5-24KBZW1
and EUWY*5-24KBZW1)
■
Loose or broken connections
■
Blown fuses (due to short circuit)
■
Defective transformer
The unit is not switched ON.
■
Check the remote start/stop set-up and correct it, if
necessary.
■
In case of remote control, check the field wiring.
One of the timers is still active.
Check the timers overview in this manual and wait
until all timers have elapsed. See ‘‘Compressor Tim-
ers” on page 2-9.
The unit is incorrectly programmed.
Check the settings.
Malfunction
Possible causes
Items to be checked
Freeze-up
■
Water flow too low
■
Refrigerant shortage
■
Operation out of range
■
Defective thermostat control
■
Pump operation
■
Water flow (blocked valves)
■
Flow switch operation
■
Operation condition
■
Blocked parts in the refrigerant system
■
Refrigerant leaks
Overcurrent in
the compressor
■
Failure on one of the phases
■
Low supply voltage
■
Motor overload
■
Power supply
■
Fuses
■
Mains isolator switch
■
Mains relay contacts
■
Operation condition
■
Compressor windings
■
Current on all 3 phases
■
Reset the overcurrent relay
High-pressure
switch
■
Defective condenser fan
operation in cooling
■
Dirty or blocked condenser
■
Operation out of range
■
Operation condition
outdoor air temp. < 43°C
■
State of the condenser (clean)
Содержание EUWY 24KBZW1 Series
Страница 2: ......
Страница 8: ...ESIE11 02 vi Table of Contents 3 1 4 5...
Страница 10: ...Introduction ESIE11 02 viii 3 1 4 5...
Страница 12: ...ESIE11 02 1 2 Part 1 System Outline 3 1 1 5...
Страница 86: ...Wiring Layout ESIE11 02 1 76 Part 1 System Outline...
Страница 88: ...ESIE11 02 2 2 Part 2 Functional Description 3 1 2 5...
Страница 128: ...The Digital Controller ESIE11 02 2 42 Part 2 Functional Description 3 1 2 4 5...
Страница 130: ...ESIE11 02 3 2 Part 3 Troubleshooting 3 1 3 5...
Страница 168: ...ESIE11 02 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Страница 198: ...Test Run and Operation Data ESIE11 02 4 32 Part 4 Commissioning and Test Run 3 1 4 5...
Страница 200: ...ESIE11 02 5 2 Part 5 Maintenance 3 1 5...
Страница 210: ...ESIE11 02 4 Index 3 1 4 5...