Test Operation Check - Toshiba MMW-AP0481CHQ-E Service Manual

7-6. Test operation check

Test operation
Test operation for one Hot water module
Operate all the Hot water module at once.
Note 1
Is there adequate temperature difference
Note 2
Note 3
START
Operation starts
Is hot water discharged?
YES
Is water circulation sufficient?
YES
between water inlet and water outlet?
(Hot water module)
YES
Is the operating voltage correct?
Indoor units : 220-240 V ±10%
outdoor units : 380-415 V ±10%
YES
Is the operating current normal?
YES
Is the operating pressure normal?
YES
Normal
Notes 1-3 are on the next page.
Note: After powering-on, it may
NO
NO
NO
•
NO
•
NO
• Check the temperature load of the
• Check the water flow rate and use an
NO
• Check the pipe length and refrigerant
• Check the operating Hz of the
• Check the operation of the outdoor
• Check for abnormal sound in the
– 37 –
Push the ON/OFF button on the
remote controller connecting to
H-HWM to start operation of
H-HWM and then set the setting
temperature on the remote
controller to 82 ˚C
The operation does not start for
approximately 3 minutes after
powering-on or stopping operation.
require up to 10 minutes to start
the operation due to the initial
communications of the system.
Check the operating status of the
compressor.
Check the pump, the strainer and
the air vent valve.
Push the ON/OFF button on the
remote controller connecting to
H-HWM to start operation of
H-HWM and then set the setting
temperature on the remote
controller to 82 ˚C
Check power voltage of
the main power supply.
Check the cable size of
the power supply.
indoor/outdoor units.
isolating valve to adjust.
(Hot water module)
amount.
compressor.
fans.
outdoor unit.
(Abnormal sound, etc. of the
compressor and other components)