Mitsubishi Electric PUZ-HA24NHA1, Service Manual

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OCH750A
10-2. CHECK POINT UNDER TEST RUN
10-2-1. Before test run
•
After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-
age, loosened connections and incorrect polarity.
• Measure impedance between the ground and the power supply terminal block (L1, L2) on the outdoor unit by 500 V Megger
and check that it is 1.0 M
"
or over.
•
Do not use 500 V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block
(1, 2). This may cause malfunction.
• Make sure that test run switch (SW4) is set to OFF before turning on power supply.
• Turn on power supply 12 hours before test run in order to protect compressor.
•
For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes
of settings referring to the description of “12. FUNCTION SETTING".
Make sure to read operation manual before test run. (Especially items to secure safety.)
10-2-2. TEST RUN
Refer to "15-4. TEST RUN" for operation procedure.
10-2-3. ERROR INFORMATION
Refer to "15-2. ERROR INFORMATION" when an error occurs.
10-2-4. ERROR HISTORY
Refer to "15-6. ERROR HISTORY" to check the errors occurred in the past.
10-2-5. SELF-DIAGNOSIS
Refer to "15-7. SELF-DIAGNOSIS" to search for the error history.