Enthermics DC250 - Troubleshooting; Troubleshooting Guide

30
MN-37072 • Rev 2 • 05/16 • Designer Series Blanket Warmer
Troubleshooting
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.
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.
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.
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: _____________
Troubleshooting Guide
Code Refers to Action Required
E-10
ES10
ES20
ES30
ES40
ES50
ES60
ES70
Cavity sensor
Sensor 1
Sensor 2
Sensor 3
Sensor 4
Sensor 5
Sensor 6
Sensor 7
Sensor is shorted. So 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.
E-11
ES11
ES21
ES31
ES41
ES51
ES61
ES71
Cavity sensor
Pad sensor 1
Pad sensor 2
Pad sensor 3
Pad sensor 4
Pad sensor 5
Pad sensor 6
Pad sensor 7
Sensor is open. So 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.
P130
P230
P330
P430
P530
P630
P730
Pad 1
Pad 2
Pad 3
Pad 4
Pad 5
Pad 6
Pad 7
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.
*E-31 Cavity sensor
• 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.
P131
P231
P331
P431
P531
P631
P731
Pad sensor 1
Pad sensor 2
Pad sensor 3
Pad sensor 4
Pad sensor 5
Pad sensor 6
Pad sensor 7
Heater pad over-temp error
• So ware disengages heating pads.
• Acknowledge error by pressing on/off button.
• Allow appliance to cool.
• Call service if error persists.
*E-33 Cavity sensor • 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
*E-50 Analog to Digital
Convertor Error
• Remove inventory, discard if necessary, and allow appliance to cool down.
• If error persists a er cool down and reset, the control assembly should be replaced by
a qualifi ed service technician. Contact service.
E-60 Real Time Clock
Checksum Error
(Blanket Warmers Only)
Real time clock rechargeable battery backup has discharged.
• Plug appliance into outlet for 30 minutes.
• See Timer Control Feature section in blanket manual to reset clock.
*E-61 Real Time Clock
(Blanket Warmers Only)
Real time clock not responding. Call service if error persists.
E-62 Real Time Clock
(Blanket Warmers Only)
Timer overlay is present, but no real time clock is detected. Call service.
*E-70 Pad Count Error More heater pads detected than set for. Hold On/Off button for 12 seconds until display
shows "PAd#” (# = number of pads selected [3-7]). Press up or down arrow to adjust to
correct number of pads. [Blanket Warmers: 1.5
3
, 2.5
3
= 3 pads, 3.5
3
, 4.0
3,
7.5
3
= 4 pads.
Fluid Warmers: 2.5
3
& 4.0
3
= 3 pads]
*E-71 Personality Error Call service
E-80 EEPROM Error EEPROM not responding. Call service if error persists.
*E-81 Calibration
not locked
Call service
*E-83 EEPROM Error Call service for help resetting the control.
E-87 EEPROM Error Stored offsets corrupted. Offsets reset to 0.
• Control may need to be recalibrated.
• Possible bad EEPROM.
• Call service if error persists.
E-90 Button stuck A button has been held down for >60 seconds. Adjust control. Error will reset when the
problem has been resolved.
E-95 Factory Test pin
short detected.
Ensure that debris is not causing a short between the test pins. If the pins are good,
replace the control.
*E-98 Temperature
Delta Error
Temperature of the cavity sensors 1 and 2 differ by more than 1.7ºC (3ºF).
• Remove product and allow the appliance to cool down.
• Verify that the product sensor is clean and operating correctly.
• Press the power button to clear error code.
• If error persists, the sensor switch assembly should be replaced by a qualifi ed service
technician. Contact service.
E-99
Hardware
Over Temp
• Inspect the connections and condition of high limit bimetal thermostat.
• If error continues call service.
*EFAn
Fan or Fan
Sensor Failure
(Fluid Warmers Only)
• If the fan is operating, make sure the lens on the sensor is not blocked or dirty.
• If error persists a er the sensor is cleaned, use an Ohm meter to ensure that the sensor
wires are good. A good wire will have a reading of <1 Ohm.
• If the wires are good, replace the sensor.
• If the error persists a er replacement, check the sensor mount location.
• If the error still persists, replace the control.
* 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.