Trial Operation Check; Flowchart Of Trial Operation Procedure; Power Source And Initial Set-Up Check; Fan Operation Check - Toshiba HFCR407C Service Manual

Trial operation check

After "Check before trial operation", implement a trial operation in the following procedure. (Turn the power switch on and the
crank case heater for 12 hours before a trial operation will be completed.)
Check the trial operation for each indoor unit. When multiple indoor units are concurrently operated check for
misconnection, etc. of the refrigerant pipe and control wiring, errors can occur. Therefore, set "STOP" for indoor units.

Flowchart of trial operation procedure

(1) Power source and initial set-up check

Does the operation lamp of
the remote controller light ?
Yes
Does the LCD display on the remote
controller show "STANDBY" ?
No
Is an alarm code displayed on the
remote controller ?
No
Normal

(2) Fan operation check

Start
Set the operation mode to "FAN" by
pushing the operation switch.
Is air discharged from the
discharge port of indoor unit ?
Is there an abnormal sound ?
No
Normal
Check each indoor unit consecutively.
Trial operation
Procedure and summary of trial operation
No
Yes
Yes
No
Yes
Yes
Check power supply of the indoor unit.
Check wiring between indoor unit and remote controller.
Disconnect wires surrounding the control PC board of indoor unit.
Check connector error.
Check transformer failure of indoor microprocessor.
Check remote controller error.
Check control PC board failure of indoor unit.
Check for over capacity of the total connected indoor units.
Check power supply phase order of outdoor units.
Check incorrect set-up of indoor unit HP rating (SW08).
Check the remote controller error.
Check control PC board failure of indoor unit.
Refer to Check code displayed on remote controller, outdoor unit and check
positions.
Check indoor fan, fan motor, and fan circuit.
Check peripherals of the fan.
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