Troubleshooting - Enthermics DC250 Operation And Care Manual

Troubleshooting

This section is provided for the assistance
of qualified and trained service
technicians only and is not intended
for use by untrained or unauthorized
service personnel. Failure to observe this
precaution may void the warranty.
NOTE: If the appliance is not operating properly, check the
following before calling an authorized service agent:
• Check the power applied to the appliance. Verify
female end of plug is securely seated in appliance
and that the male end of plug is in an appropriate,
functioning outlet.
• Check the fuses. See fuse replacement instructions.
Troubleshooting Guide
Code Refers to
E-10 Cavity sensor
ES10 Sensor 1
ES20 Sensor 2
ES30 Sensor 3
ES40 Sensor 4
ES50 Sensor 5
ES60 Sensor 6
ES70 Sensor 7
E-11 Cavity sensor
ES11 Pad sensor 1
ES21 Pad sensor 2
ES31 Pad sensor 3
ES41 Pad sensor 4
ES51 Pad sensor 5
ES61 Pad sensor 6
ES71 Pad sensor 7
P130 Pad 1
P230 Pad 2
P330 Pad 3
P430 Pad 4
P530 Pad 5
P630 Pad 6
P730 Pad 7
*E-31 Cavity sensor
P131 Pad sensor 1
P231 Pad sensor 2
P331 Pad sensor 3
P431 Pad sensor 4
P531 Pad sensor 5
P631 Pad sensor 6
P731 Pad sensor 7
*E-33 Cavity sensor
* All non-critical codes can be cleared using the on/off button. Critical errors (marked with a *) can only be cleared by turning the power switch at the
rear of the appliance off and allowing the appliance to cool.
*E-50 Analog to Digital
30
Convertor Error
Action Required
Sensor is shorted. Soft ware disengages heating pads. Acknowledge error by pressing on/
off button. If error persists, a qualifi ed service technician should test the sensor.
• Test the sensor. Detach the sensor from appliance. Use an Ohm meter to measure the
resistance of the sensor. Check the sensor at 25°C (77°F). If the reading is 10 KOhm ±1.5
KOhm, replace the display. If the reading is ±2 KOhm, replace sensor.
• Check the wires for integrity. Check for proper and secure connections at the control
and terminal block. If necessary, re-secure the faulty connections.
• Call service if error persists.
Sensor is open. Soft ware disengages heating pads. Acknowledge error by pressing on/off
button. If error persists, a qualifi ed service technician should test the sensor.
• Test the sensor. Detach the sensor from appliance. Use an Ohm meter to measure the
resistance of the sensor. Check the sensor at 25°C (77°F). If the reading is 10 KOhm ±1.5
KOhm, replace the display. If the reading is ±2 KOhm, replace sensor.
• Check the wires for integrity. Check for proper and secure connections at the control
and terminal block. If necessary, re-secure the faulty connections.
• Call service if error persists.
Heating pad has not reached set-point temperature. Acknowledge error by pressing on/
off button. If error persists, a qualifi ed service technician should test the heater pad(s).
• Turn appliance off and unplug it from AC power.
• Use Ohm meter to measure resistance between L:(Line) & N:(Neutral) leads of a cold
heater pad.
• The Ohm readings shall be:
black to black wire = 251 to 291 Ohms
black to white wire = 126 to 145 Ohms
• Call service if error persists.
• Sensor reading is above temperature set-point. [Blanket Warmer triggers at 15° over set
point. Fluid Warmers trigger at 5° over set point.]
• Call service.
Heater pad over-temp error
• Soft ware disengages heating pads.
• Acknowledge error by pressing on/off button.
• Allow appliance to cool.
• Call service if error persists.
• Sensor reading is above maximum allowable temperature set-point and over temp
value. [Blanket Warmers trigger at 82°C (180°F). Fluid Warmers trigger at 71°C (160°F).]
• Contact service
MN-37072 • Rev 2 • 05/16 • Designer Series Blanket Warmer • Remove inventory, discard if necessary, and allow appliance to cool down.
• If error persists aft er cool down and reset, the control assembly should be replaced by
a qualifi ed service technician. Contact service.
NOTE: All non-critical codes can be cleared using the on/off
button. Critical errors (marked with a *) can only be
cleared by turning the power switch at the rear of the
appliance off and allowing the appliance to cool.
Do not attempt to repair or service beyond this point.
Contact manufacturer for nearest authorized service
agent. Repairs made by any other service agent without
prior authorization by manufacturer will void the
warranty on the appliance.
Blanket warmer temperature may fl uctuate ±10° from
set point.
Serial number is required for all inquiries.
Always include both model and serial number(s) in any
correspondence regarding the appliance.
Model: ______________________________________________
Serial Number: ______________________________________________
Purchased From: ______________________________________________
Date Installed: ____________________ Voltage: _____________