Garland MO/WO 3500, Installation, Operation And Maintenance Manual

36 

Part Number 4532880 1/15

Troubleshooting 

Section 5

NOTE: If a problem arises during operation of your induction unit, follow the chart below before calling service. Routine 

adjustments and maintenance procedures are not covered by the warranty.

Troubleshooting Chart Without Error Code / Indicator Lamp Flash Code

Symptom

Possible Cause

Corrective Action

Pan does not heat up,
LED lamp is OFF (dark).

No power supply.

Check incoming power supply, e.g. power 
cable plugged into the wall socket.

Control knob is in OFF-position.

Turn control knob to an ON-position.

Defective induction unit.

Ensure knob is in OFF-position and if possible 
and safe, disconnect the unit from the power 
supply. Contact your authorized service 
agency.

Pan does not heat, green LED lamp 
blinks continuously.
If LED lamp blinks at intervals, see next 
section.

Pan is too small.

Use a suitable pan with bottom diameter 
larger than 5” (12cm).

Pan is not placed in the center of the hob; pan 
is not detected by sensor.

Move the pan to the center of the hob.

Unsuitable pan.

Select proper cookware for induction cooking. 

Defective induction unit.

Ensure knob is in OFF-position and if possible 
and safe, disconnect the unit from the power 
supply. Contact your authorized service 
agency.

Poor heating, green LED lamp is ON

Air-cooling system is obstructed.

Verify that air inlet and outlet are not 
obstructed. Ensure the Intake Air Filter is clean.

Unsuitable pan.

Select proper cookware for induction cooking. 
Then compare the results.

Ambient temperature is too high; the cooling 
system is not able to keep the induction unit in 
normal operating conditions.

Verify that no hot air is sucked in by the fan. 
Reduce the ambient temperature. The intake 
air temperature must be lower than 104°F 
(40°C).

One phase is missing (for units with three 
phase supply only).

Check incoming power supply, e.g. power 
cable plugged into the wall socket.

Defective induction unit.

Ensure knob is in OFF-position and if possible 
and safe, disconnect the unit from the power 
supply. Contact your authorized service 
agency.

Unit does not react to control knob 
positions

Defective control switch.

Ensure knob is in OFF-position and if possible 
and safe, disconnect the unit from the power 
supply. Contact your authorized service 
agency.

Power/heating level seems to be 
reduced, fan is working

Air-cooling system is blocked. Internal fan is 
dirty.

Verify that air inlet and outlet are not 
obstructed. Ensure the Intake Air Filter is clean. 
Contact your authorized service agency.

Power/heating level seems to be 
reduced, fan does not work

Defective fan or fan control.

Ensure knob is in OFF-position and if possible 
and safe, disconnect the unit from the power 
supply. Contact your authorized service 
agency.

After a long period of continuous 
operating time, Power/heating level 
seems to be reduced

Overheated induction coil; cooking area is too 
hot.
Overheated oil in pan.
Pan is empty.

Switch the unit off. Safely remove pan. Wait 
until the heating zone has cooled down before 
turning the unit ON again.

Small metallic objects (e.g. spoon) are 
heated up on the cooking area.

Pan detection circuit is defective.

Ensure knob is in OFF-position and if possible 
and safe, disconnect the unit from the power 
supply. Contact your authorized service 
agency.