11
10
TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
Lamp is not turned ON Bad wire connection. Repair or replace wires.
Motor is running
Lamp is fused. Change lamp.
No connection between lamp and power Repair or replace.
socket.
The quartz lamp transformer has burned out. Replace transformer.
Lamp is not turned ON Bad connection between power plug and Repair or replace.
Motor is not running power socket.
Power cord is damaged. Replace power cord.
Fuse of power board is damaged. Replace fuse.
Lamp is ON Motor is not Thermal cutout of motor is working. Wait for a while and turn on again.
running
Condenser malfunction. Replace condenser.
Motor malfunction. Replace motor.
Faulty power board and control board. Contact service center
Excessive vibration noise Ensure appliance is securely mounted. Check and ensure appliance is properly
increases mounted.
The connecting pieces of the fixed screws Tighten screws.
are loose.
Volute standing fixed screws are loose. Tighten screws.
Motor fixed screws are loose. Tighten screws.
Impeller installation is not in place. Install in place.
Impeller is damaged and balance piece Replace impeller.
is lost.
Poor suction Too much oil in filter. Clean filter.
The air convection in the kitchen is too big Reduce air convection and open doors and
or space sealing is too tight. windows moderately.
Higher installation height. Adjust to appropriate height.
Exhaust pipe is too long or has too many Install according to the manual.
turns.
Outdoor wind is too strong. Non-technical faults.
MDH-922OC(IM)291216.qxp_Layout 1 1/19/17 3:14 PM Page 6
