222, 223, 622 and 623 Table Drawer Heater System Troubleshooting

Model

 222-016 223-016 622-008 623 -008,-010, -011
Serial Number All All All All

This illustration shows only the components that affect the drawer heater system. A detailed description of current flow during this function also appears below.

230 VAC models only. Line voltage (230 VAC) is supplied thru two fuses, located by the IEC inlet, to a transformer that reduces the line voltage to 115 VAC before it reaches the Distribution Board.

Drawer Heater Operation

115 VAC is supplied directly to the Drawer Heater switch thru two fuses on the Distribution Board. Voltage bypasses the Main PC Board. When the drawer heater switch is turned ON, current flows to the heater plate. When the heater plate is energized, it warms the contents of the drawer.

Drawer Heater System

Drawer Heater System Troubleshooting

Function Status Problem

Drawer Heater

Thumbs down

Does not heat up.

Heater Switch

Thumbs down

Does not illuminate.

Drawer heater

1.Loose Wire Connections between heater switch and power cord.

2.Distribution Board Fuses. Refer to: Fuses

3.Perform Drawer Heater Switch Test. Refer to: Drawer Heater System

Function Status Problem

Drawer Heater

Thumbs down

Does not heat up.

Heater Switch

Thumbs down

Ok, illuminates.

Drawer heater

1.Loose Wire Connections between heater switch and power cord.

2.Perform Drawer Heater Switch Test. Refer to: Drawer Heater System

Function Status Problem

Drawer Heater

Thumbs down

Ok.

Heater Switch

Thumbs down

Does not illuminate.

Drawer heater

1.Perform Drawer Heater Switch Test. Refer to: Drawer Heater System