TROUBLESHOOTING
Page 43
Service Manual Hot Deli HD3/4/5/7 form 9123549 rev.03/2017
HOT DELI 3/4/5/7 PREMIUM: HUMIDIFIED/AUTOMATIC WATER FILLING
Symptom
Possible causes
No power to warmer controls.
1. Main breaker open.
2. Fuse F1 burned.
3. Wiring loose.
4. Loose flat cable display / I.O. board
Display does not reach desired tempera-
ture.
1. Incorrect line voltage.
2. PT-1000 sensor malfunction.
3. Heater(s) inoperative.
4. Contactor inoperative.
5. Power and I/O board malfunction.
Display temperature gets too high.
1. PT-1000 sensor malfunction.
2. Contactor inoperative.
3. Blower motor(s) inoperative.
4. Relay on power and I/O board malfunction (x9)
5. Power and I/O board malfunction.
Buzzer alarm sounds, but water tray is
filled.
1. Scaling on water level sensor.
2. Electronic waterlevel control malfunction.
3. Wiring loose.
No heating of water tray.
1. Heater(s) inoperative.
2. Relay on power and I/O board malfunction (x11-x12)
3. Wiring loose.
Water keeps flowing.
1. Scaling on water level sensor.
2. Water level control malfunction.
3. Relay mafunction.
4. Solenoid water valve malfunction.
5. Too much pressure on water supply (valve does not close).
No water supply.
1. No pressure on water supply.
2. Water tube blocked.
3. Water level sensor malfunction.
4. Wiring loose.
5. Electronic water level control malfunction.
6. Relay mafunction.
7. Solenoid water valve malfunction.
No display and/or keypad does not func-
tion.
1. Loose flat cable display / I.O. board
2. Fuse F4 (125mA) burned
3. Fuse F1 or F2 burned.
4. Display and/or power and I/O board malfunction
No lighting.
1. Incorrect line voltage.
2. Relay on power and I/O board malfunction (x10)
3. Wiring loose.
4. Power and I/O board malfunction.
No buzzer alarm when water level in water
tray is low.
1. Scaling on water level sensor.
2. Water level sensor malfunction.
3. Water level control malfunction.
4. CPU board malfunction (buzzer broken).
5. Humidification setting on the keypad is on zero.
Products dry out too fast.
1. No water in water tray.
2. Temperature setting too high.
Summary of Contents for HOT DELI 3
Page 2: ...Service Manual Hot Deli HD3 4 5 7 form 9123549 rev 04 2017 Page 2 TABLE OF CONTENTS EMPTY PAGE...
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Page 122: ...Service Manual Hot Deli HD3 4 5 7 form 9123549 rev 03 2017 Page 122 EMPTY PAGE...
Page 123: ...Service Manual Hot Deli HD3 4 5 7 form 9123549 rev 03 2017 Page 123 EMPTY PAGE...
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