DC Inverter U-match Series Duct Type Unit
34
7.3 Fresh Air Control
11-levels control can be realized for the amount of fresh air taken in. The function
not only facilitates the health of users, but also controls the electricity consumption loss
because of taking in fresh air. This kind of control can be carried out through the wire
controller. The function can set at any time, goes into effect at any time, and features
very simple operation. (Refer to the section of wire controller instructions for detailed
operation.)
Fig. 7.3
8 Troubleshooting and Maintenance
8.1 Troubleshooting
If your air-conditioning unit suffers from abnormal operation or failure, please first
check the following points before repair:
Failure
Possible Reasons
The unit cannot be started.
①
.
The power supply is not connected.
②
.
Electrical leakage of air-conditioning unit causes tripping of the
leakage switch.
③
.
The operating keys are locked.
④
.
The control loop has failure.
The unit operates for a while
and then stops.
①
.
There is obstacle in front of the condenser.
②
.
The control loop is abnormal.
③
.
Cooling operation is selected when the outdoor ambient
temperature is above 46.1°C (115°F).
