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MS-SVN084A-EN
Common Malfunction and Corrective Action
If the unit doesn’t run normally, check the following items:
Phenomenon Reason Treatment
The unit can not be started.
The unit isn't connected to power. Connect with power supply.
Low voltage. Check if circuit voltage is within nameplate
voltage.
Fuse broken or breaker trips off. Replace fuse or connect breaker.
The unit operates but stops immediately. Air inlet/outlet of indoor unit is blocked. Remove obstruction.
Abnormal cooling or heating.
Air inlet/outlet of indoor unit is blocked. Remove obstruction.
Inappropriate temperature setting. Adjust setting at thermostat.
Filter is blocked by dirt. Clean or replace the filter.
Note: If reasons are still unclear after checking above items, please contact authorized service center for assistance.
Following circumstances are not malfunction:
“Malfunction” Reason
Unit doesn’t run.
Unit won't start immediately after it shuts
down.
There is a 3 minute time delay before the unit
can restart.
When power is initially turned on. Unit is in standby mode for about 1 minute.
Indoor unit still runs after thermostat is
satisfied.
Indoor unit fan continues to run after
thermostat is satisfied.
Indoor fan can be set to "ON" or "AUTO"
mode. In the "ON" mode, the fan runs
continuously.
There are LED indicators on the main board of the indoor unit, which are used to display the operating status and malfunction information of the
unit.
LED indicator Color Function
Power Indicator Red
Indoor unit main board is powered on, Power
Indicator is on.
Running Indicator
Green
After detecting the indoor fan run signal, the
running indicator light is on, when there is no
indoor fan signal, the running indicator light is
off. When detecting a system failure, the
running indicator light flashes.
Different running indicator flashing light means different system failure.
Malfunction
Running Indicator status
Remark
Indoor Jumper cap failure Light out 3 seconds then flashes once
Flashing means light on 0.5 seconds and then
off 0.5 seconds.
Indoor fan failure
Light out 3 seconds then flashes twice
Indoor tube temperature sensor failure Light out 3 seconds then flashes four times
Indoor air outlet temperature sensor failure Light out 3 seconds then flashes six times
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