TGM MWVT09S, Руководство по обслуживанию

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Service manual
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TEMPERATURE indicator
Usually it displays the temperature settings. When change the setting temperature, this indicator begins to flash, and stops
20 seconds later. It displays the room temperature when the air conditioner is in FAN only operation. When the unit stops
operation, it returns to original factory settings. The temperature indicator area will display “SC” when the self clean function is
started.
It also displays the malfunction code or protection code.
FAN SPEED indication lamp
Displays the selected fan speed: AUTO (nothing) and three fan speed levels: LOW, MED and HIGH.
9.2.2 LED display control function.
Pressing “LED display” button on remote controller will turn off all displays on indoor unit, when pressing once again, all
displays will resume.
9.2.3 Display function in outdoor unit.
9.3 Protection
9.3.1 Three Minutes Delay at restart for compressor.
9.3.2 Temperature protection of compressor top.
9.3.3 If the temperature of compressor top is too high(higher than 115 ℃ and the Over-load Protector is cut, the units stop.
When the Over-load Protector restore and close(lower than 100 ℃ ), the compressor will restart( in this case the compressor is
restricted by Three Minutes Delay protection.
9.3.4 Temperature protection of compressor exhaust.
If the exhaust temp. of compressor is higher than 115 ℃ and lasts for 5 seconds, the compressor stops and does
not resume until the exhaust temp. is lower than 90 ℃.
9.3.5 Inverter module Protection, Inverter module Protection itself has a protection function against current, voltage and
temperature. If these protections happened, the corresponding code will display on indoor unit LED.
9.3.6 Sensor protection at open circuit and breaking disconnection
9.3.7 Fan Speed is out of control. When Indoor Fan Speed is too low (lower than 300RPM for 60 seconds), the unit stops
and LED displays failure information and can’t return to normal operation automatically.
9.3.8 Cross Zero signal error warning. If there are 20 alternations of Cross Zero signals are incorrect, the unit stops and
LED displays failure information. After resuming, the motor rotates again. The spacing of Cross Zero signal is 6-13ms.
9.3.9 Indoor fan delayed open function
9.3.10 For all modes, when the units are turned on, the indoor fan can operate 10 seconds after the action of louver.
9.3.11 Compressor preheating function.
Preheating permitting condition:
If T4(outdoor ambient temperature
)＜
3
℃
and the machine connects to power supply newly or if T4
＜
3
℃
and
compressor has stopped for over 3 hours, the compressor heating cable will work.
Preheating mode:
A weak current flows through the coil of compressor from the wiring terminal of compressor, then the
compressor is heated without operation.
Preheating release condition:
If T4
＞
5
℃
or user turns on the machine and compressor runs, preheating function will stop.
9.3.12 Compressor heating cable
If outdoor temperature is lower than 5
℃
, the compressor heating cable begins to work. If outdoor temperature is higher than
15
℃
, the compressor heating cable stops working.