Troubleshooting; Error Codes - Vulcan-Hart VHU Series Service Manual

VHU INSULATED HUMIDIFIED CABINETS - TROUBLESHOOTING
Symptom
Cabinet not operating.
Ground Fault Circuit Indicator (GFCI)
tripped.
Cabinet connected to power, switch is
ON, circuit breaker is ON but cabinet not
heating.
Cabinet not heating properly.
Fan not operating
Error codes, E01, E02, or E03.
Moisture present at the top of the cabinet
near the control board.
Code
E01
E02
E03
F45642 (0217)

TROUBLESHOOTING

TROUBLESHOOTING
Possible Cause
1. Cabinet not connected to power source or circuit breaker tripped.
2. Cabinet lighted power switch not ON or malfunctioning.
1. Shorted heating element.
2. Pinched/damaged wiring (heating elements or fan).
3. Damaged power cord.
1. Heating element malfunction.
2. Temperature controller malfunction.
1. Door not sealing properly.
2. Fan not circulating air or malfunction.
3. Temperature controller needs calibrating or malfunction.
1. Temperature controller not supplying power to fan (malfunction).
2. Fan wiring not connected or malfunction.
3. Fan not circulating air or malfunction.
1. RESET SENSOR CODES .
1. Fan mounted to top cover blocked off.
2. Fan mounted to top cover not functioning.
3. Fan mounted to top cover missing.

ERROR CODES

Description
Displays when controller detects and
open temperature sensor
Displays when controller detects a
shorted temperature sensor.
RH Display is ON and there is a short
10 RH error.
Page 16 of 16
Correction
Refer to: RESET SENSOR CODES