Toshiba MMU-AP0091H service manual All cooling test operation function, Operation procedure, 103

1.All cooling test operation function

This function is provided to change collectively the mode of all the indoor units connected to the same system for cooling test operation mode, using switches on the interface P.C. board of the header unit.

Operation procedure

Power ON

Be sure to turn on power at the indoor side before power-ON of outdoor unit.

Set SW01 on the interface P.C. board of the header unit to [2],

Sw02 to [5], and SW03 to [1] respectively. ([C ] is displayed on the 7-segment display [A].)

Push SW04 on the interface P.C. board of the header unit for 2 seconds or more.

[TEST] is displayed on the remote controller of the indoor unit to be operated.

Check that “– C ” is displayed on the 7-segment display		[A]		[B]
[B] on the interface P.C. board of the outdoor unit.
	[C	]	[	–C]

Start

Operation check

Return SW01, SW02, SW03 on the interface P.C. board of the outdoor unit to [1], [1], [1] respectively or push the push-switch SW05 for 2 seconds or more.

Stop/End

2.All heating test operation function

This function is provided to change collectively the mode of all the indoor units connected to the same system for heating test operation mode, using switches on the interface P.C. board of the outdoor unit.

Operation procedure

Power ON

Be sure to turn on power at the indoor side before power-ON of outdoor unit.

Set SW01 on the interface P.C. board of the header unit to [2],

Sw02 to [6], and SW03 to [1] respectively. ([H ] is displayed on the 7-segment display [A].)

Push SW04 on the interface P.C. board of the header unit for 2 seconds or more.

[TEST] is displayed on the remote controller of the indoor unit to be operated.

Check that “– H ” is displayed on the 7-segment display	[A]			[B]
[B] on the interface P.C. board of the outdoor unit.
	[ H	]	[	–H]

Return SW01, SW02, SW03 on the interface P.C. board of the outdoor unit to [1], [1], [1] respectively or push the push-switch SW05 for 2 seconds or more.

Interface P.C. board	7-segment display [A]		7-segment display [B]
		SW04	SW05

Start

Operation check

Stop/End

SW01 SW02 SW03

Rotary switch

NOTE) The test operation returns to normal operation after 60 minutes.

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