Information Inquiry - Mars Comfort-Aire Century VCD-SA Series Service Manual

4. Information Inquiry

• To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination "ON/OFF
+ Air Speed" for 7s:
• After entering the engineer mode, the remote control will display icons of "Auto, Cool, Dry, Heat", and the Battery
icon; at the same time, it will also display the numeric code of the current engineer mode (for the initial engineer
mode, the numeric code displayed is 0), and all other icons are inactive.
• In engineer mode, the value of the current numeric code can be adjusted circularly through the Up/Down key, with
the setting range of 0 to 30. Each time the current numeric code is adjusted, the special code of the engineer mode
will be transmitted with a delay of 0.6s. The code can also be transmitted by pressing "OK", and the special code of
the engineer mode sent contains information of the currently displayed numeric code (if the numeric code is 0, the
code to enter the engineer mode will be transmitted).
• In engineer mode, other keys or operations are invalid except for the On/Off key, the Up/Down key, the OK key or
executing the operation to exit the engineer mode.
Code Query Content
0 Error code
1 T1 temperature
2 T2 temperature
3 T3 temperature
4 T4 temperature
5 TP temperature
Compressor
6 Target Frequency
FT
press "On/Off" for 2s to enter the Power Down Memory Selector, the code
displayed is "Ch", press "OK" to send the Query Power Down Memory
Selector code; press the Up/Down key to select 1 or 0 and press "OK" to
confirm, 1 indicates that the power down memory exists, and 0 indicates that
no power down memory exists; and press "On/Off" for 2s to exit.(Set within 1
minute after power on)
press "On/Off" for 2s to enter the Internal Fan Control Selector after the pre-
set temperature is reaches, the code displayed is "Ch", press "OK" to send
the Query Internal Fan Control Selector code; press the Up/Down key to select
1 to 11: 1 - Stop the fan, 2 - Min. air speed, 3 - Set the air speed, 4 - Termal
running for 5min, press "OK" to confirm, and press "On/Off" for 2s to exit.
(Set within 1 minute after power on)
press "On/Off" for 2s to enter the Mode Selector, press the Up/Down key to
select CH (cool and heat, Auto + Cool + Dry + Heat + Fan), CC (Cool only
without Auto, Cool + Dry + Fan) , press "OK" to confirm, and the mode
selected can be memorized when the remote control is powered down and
powered on; and press "On/Off" for 2s to exit. When the remote control does
not burn any parameters, the mode setting will not be memorized. (Set within
1 minute after power on)
press the "On/Off" for 2s to enter the Min. Set Temperature Selector, press
the Up/Down key to select "16°C~24°C", press "OK" to confirm, and the
Min. Set Temperature can be memorized when the remote control is powered
on and power lost; and press "On/Off" for 2s to exit. When the remote
control does not burn any parameters, the min. set temperature will not be
memorized.(Set within 1 minute after power on)
press "On/Off" for 2s to enter the Max. Set Temperature Selector, press the
Up/Down key to select "25°C~30°C", press "OK" to confirm, and the Max.
Set Temperature can be memorized when the remote control is powered
on and power lost; and press "On/Off" for 2s to exit. When the remote
control does not burn any parameters, the max. set temperature will not be
memorized.(Set within 1 minute after power on)
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 Troubleshooting 9
Service Manual - VCDxxSA
Advanced Function Setting
