Mars Comfort-Aire Century VCD-SA Series Service Manual page 114

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• In Channel 1~30 settings of the engineer mode, long press the On/off key to return the previous engineer mode.
Exit of engineer mode:
1)In engineer mode, press the key combination of "On/Off + Air speed" for 2s;
2)The engineer mode will be exited if there are no valid key operations for continuous 60s.
press "On/Off" for 2s to enter the Cooling Temperature Compensation Value
Settings, the code displayed is "Ch", then press "OK" to send the Query
Cooling Temperature Compensation Value code; press the Up/Down key to
select the cooling temperature compensation value, then press "OK"; and
press "On/Off" for 2s to exit.
press "On/Off" for 2s to enter the Heating Temperature Compensation Value
Settings, the code displayed is "Ch", press "OK" to send the Query Heating
Temperature Compensation Value code; press the Up/Down key to select the
heating temperature compensation value, then press "OK"; and press "On/
Off" for 2s to exit.
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 Troubleshooting 11
Service Manual - VCDxxSA
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