Rotenso CONTROL Series User Manual page 25

Control Module - RCU-AHUBOX-1C R14
CONTROL MODULE RCU-AHUBOX-1C R14
ENTER — For engineering mode and Error Code checking. Please refer to following content.
ALT/RET — For engineering mode and Error Code checking. Please refer to following content.
LED lamps introduction:
HEAT LED is lightened when the unit is operating in heating mode.
COOL LED is lightened when the unit is operating in cooling mode.
DEF LED is lightened when unit is in defrost mode.
Connection terminal
Terminal cover
Cable clamp
Please follow outdoor unit installation instruction.
6. ENGINEER MODE, MALFUNCTION ERROR CODE
To enter engineer mode, in power-on or standby mode, and in non-locked state, press the button "ENTER"
shortly and then LED display will show "N. "
After entering the engineer mode, the LED display will show 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 button
"ALT/RET" by short press, with the setting range of 0 to 20.
After Query Code is chosen in engineer mode, press the key "ENTER" shortly, LED display will show Query
Content.
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User manual