Gree GWH18MC-K3DNA2G Service Manual page 30

Service Manual
●Display of operation patterns and mode patterns
When the unit is powered on, all patterns will be displayed and the standby operation indicator will become red. When the unit is turned on
through a remote controller, the operation indicator is light. At the same time, operating mode patterns (mode indicators include cooling,
heating and dehumidification modes) set currently are displayed, and dynamic display patterns of wind speed are displayed. If the light
button is switched off, all display will be turned off.
●Temperature display control mode of separated air conditioner
① When user sets the remote controller at set temperature display, currently set temperature will be displayed.
② Only when remote signals are converted from other display states into indoor ambient temperature display state, the remote controller
will display indoor ambient temperature for 3 seconds and then return to set temperature display.
③ Only when remote signals are converted from other display states into outdoor ambient temperature display state, the remote controller
will display outdoor ambient temperature for 3 seconds and then return to set temperature display.
④ If the controller is lack of outdoor display functions, as the signal is received, set temperature will be displayed.
⑤ When the unit is turned off, temperature display will be compulsively set at given temperature by the controller. When the unit is turned
on, patterns as set by remote signals will be displayed.
⑥ If user does not set up temperature display state, given temperature will be displayed.
(2) Failure display of indoor unit
1. Requirements for failure display
When multiple failures appear at the same time, failure protection codes shall be displayed alternatively.
① Hardware failures shall be displayed immediately, refe rring to requirements in "Failure State Display Table";
② Operation states shall be displayed immediately, referring to requirements in "Failure State Display Table";
③ Other failures shall be displayed 200s after the compressor stops, referring to requirements in "Failure State Display Table". (Note: in the
case that the unit is switched off with the remote controller, or the compressor is switched on again, failure display waiting time (200s) shall
be cleared.)
④ Frequency limitation and reduction states shall be displayed by means of remote calling.
2. Failure display control
Indicator failure display shall be kept synchronous with Double 8 failure display, that is, during indicator blinking, failure code corresponding
to such indicator shall be displayed on Double 8.
3. Method of remote calling of failure display
Entering the failure remote calling mode: push the light button six times within 3s to call out relevant failure protection code; Quit the failure
remote calling mode: push the light button six times within 3s or call out failure display to enter it for 5 minutes and then quit.
3. Other control targets
(1) Up and down wind blow functions
When the unit is powered on, the up and down wind blow motor will turn a wind deflector anti-clockwise to Position 0 to shut down the
air outlet. When the unit is switched on and wind blow function is not preset, under the heating mode, up and down wind blades will turn
clockwise to position D; and under other modes, the up and down wind blades will turn clockwise to position L. If wind blow function is set
at the same time as the unit is switched on, the wind blades will swing between position L and D. The wind blades can be kept in seven
states: position L, position A, position B, position C, position D, swing between position L and D, stop at one position from L to D. When the
unit is turned off, the wind deflector will be closed up to position 0. Wind blow action is effective only when wind blow commands are set
and the indoor unit is running.
O(0°)
Note: When the wind blades are set at position L to B, position A to C, or position B to D through
remote setting, the wind deflector will swing between position L and D. L—A—B—C—D.
(2) Buzzer
When the controller is powered on, signals from a remote controller are received, or the auto button
is pushed, a buzzer will give out prompt tone.
(3) Auto button
When the button is pushed, the unit will operate in auto mode and the indoor fan will run in auto state. When the indoor fan is running, the
wind blow motor will work. When the button is pushed again, the unit will be switched off. At the same time as the button is pushed, the
whole unit will be powered on and enter into fast test mode; when the unit is powered on and detects for continuous 20s (such time shall
not be fast tested) that the auto button is pushed, and if the unit is currently at fast test state, the unit will quit the fast test state.
Technical Information
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