Daikin EUWL KZW1 Series, Service Manual

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Troubleshooting ESIE-0303
3–22 Part 3 – Troubleshooting
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4.3 General Repair Procedures
Refrigeration circuit
repairs To carry out refrigeration circuit repairs, proceed as follows:
For more information on the general repair procedures for R-407C, refer to the Service Manual for
products using refrigerant R-407C.
All refrigeration work has to be carried out by a licensed refrigeration engineer, and it has to comply
with all relevant European and national regulations.
Electrical circuit
repairs To carry out electrical circuit repairs, proceed as follows:
All electrical work has to be carried out by a licensed electrical engineer, and it has to comply with all
relevant European and national regulations.
Step Action
1 Recover the refrigerant from the unit.
It is strictly forbidden to release refrigerant into the atmosphere during service or repair
jobs.
2 Carry out the repair according to the normal procedure.
There are no special procedures for the replacement of refrigeration parts.See the
general Daikin air-conditioning service manual for more information on the standard
practice of refrigeration works.
3 Pressurize the system. Make sure there are no leaks.
4 Charge with the proper amount of refrigerant.
Step Action
1 Measure all that is needed to locate the defective parts of the system.
2 Switch OFF the main power supply.
3 Carry out the repair according to standard procedures.
4 Switch ON the power supply.
5 Verify the proper operation of the replaced part by measurements.