PACD011001C2 Backup and Emergency Operation
Special Service Mode UM Combination “MA1R Series” Using R-407C 559
1.1.2 Emergency Operation:
Set in setting mode 2. Operates the system when an outdoor unit malfunctions.
1. When an inverter type outdoor unit malfunctions
When an inverter type compressor malfunctions, you can continue operation using constant speed type
compressors only.
Emergency Operation Method
1. Set to “EMG” in setting mode 2.
and
2. All indoor units connected to this outdoor unit are turned on by thermostat.
Emergency operation stops at the following conditions.
1. Emergency operation mode is reset on outdoor unit PC board.
or
2. One or more indoor units connected to this outdoor unit are turned off by thermostat.
Setting of Emergency Mode
Setting Method LED Display
H1P H2P H3P H4P H5P H6P H7P
Hold down the Mode button for 5 seconds to change to setting
Mode 2.
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Push SET button and select LED display to “Emergency Mode”.
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Push the RETURN button.
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Push SET button and select LED display as shown right.
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Push the RETURN button to enter “Emergency Mode”.
„
All indoor units must be thermostat ON.
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