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2.2.11 Water pump control
A: Water pump will be electrified when indoor unit enters non-heating mode until indoor unit stops. 5 minutes
later after indoor unit stops, water pump will stop.
B: When indoor unit is in heating mode, water pump will not operate.
C: In OFF state and in any mode, once float switch signal is measured, indoor unit will send OFF signal to
outdoor and send the failure code of drainage system to the wired controller, then the water pump will work until
the float switch signal is cancelled. After water pump is forced to run for 5 minutes, indoor unit will be back to
normal state.
2.2.12 Compulsory defrosting operation
A: After indoor receives the compulsory defrosting signal, it will send continously the signal to outdoor for 10
times, in this period, indoor unit will work normally and it will enter defrosting operation until it receives the enter-
defrost signal from outdoor unit.
B: Wired control type: In heating mode, make a jumper for D2 to enter compulsory defrosting.
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C: Remote control type: In heating mode, high speed, 30
C, press SLEEP button 6 times, and the buzzer will
sound 3 times, then enter the manual defrosting.
2.2.13 Trial operation
A: Enter condition
a: Wired control type: In OFF state of COOL or HEAT mode, press ON/OFF button for over 5 seconds to enter
the cooling or heating trial operation;
b: Remote control type: In OFF state, keep pressing ON/OFF button until 5 seconds later, the buzzer sounds
twice, then enter the cooling or heating trial operation;
B: Response in trial operation
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a: Cooling trial operation: indoor sends S-CODE=SD to outdoor, indoor: at high speed, set temp: 16
C;
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b: Heating trial operation: indoor sends S-CODE=SF to outdoor, indoor: at high speed, set temp: 30
C;
c: In this period, anti-freezed and overheat functions are invalid.
C: Quit condition
a: Receiving the signal of cancelling trial operation from wired controller or remote controller;
b: After trial operation has run for 20 minutes, it will quit trial operation automatically and enter the normal mode
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with the set temp.: 24
C.
2.2.14 Timer operation
A: Wired control type: wired controller will control the unit ON/OFF;
B: Remote control type: indoor unit will confirm the unit ON or OFF according to the current clock and the timer
clock set by remote controller. When setting timer function, the timer LED will be ON.
2.2.15 SLEEP function
A: Wired control type unit is without sleep function;
B: Remote control type unit consists of cooling sleep and heating sleep, after the sleep is set, the unit will
change mode; the sleep will begin to count.
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a: In cooling/dry mode, after running for 1 hour, the set temp. will increase 1
C, another 1 hour later, the
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set temp. will increase 1
C again, then 6 hours (or set time-2) later , it will stop.
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b: In heating mode, after running for 1 hour, the set temp. will reduce 2
C, another 1 hour later, the set temp. will
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reduce 2
C again, then 3 hours later, the set temp. will increase 1
C, and another 3 hours(or set time-5), it will
stop.
c: When setting sleep function, indoor motor is forced at low speed.
2.2.16 Healthy negative ion function
When receiving the healthy signal from the wired controller or remote controller, if fan motor is running, the
negative ion will work;
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