The worst has happened: You’ve turned on–or at least tried to turn on–your EHB, DHB or modular holding bin, and things aren’t working. What do you do when your holding unit won’t heat or turn on? Or even more confusing, what do the flashing messages on the display screen or timer bar mean?
You can stop tearing through your filing cabinets in search of the evasive manual. Instead, take a deep breath and check out our complete Prince Castle holding unit troubleshooting guide.
DHB and EHB Series Troubleshooting
Issue | Cause(s) | Solutions(s) |
No Power
| - Power is in the OFF position
- Power cord is not plugged in
| - Turn power switch to the ON position
- Make sure power cord is plugged in to the right outlet
|
Unit will not heat
| - Wrong power cord in use
- There is a loose connection on the power switch and/or heater
| Please contact an authorized service technician |
Unit heats but timer bar does not work
| - The timer bar wiring was disconnected
- Timer bar does not work
| Please contact an authorized service technician |
Unit under/overheats
| Check the temperature settings | Please contact an authorized service technician |
OPN and REL displays on screen
| - There’s an open relay
- The circuit does not work
- The heater does not work
| Please contact an authorized service technician |
SHR and REL
| - There’s a shorted relay
- The circuit doesn’t work
- The heater is open
- The ribbon cable is unplugged
| Please contact an authorized service technician |
HHH displays on screen while heater is hot
| Temperature is above 300℉ | Please contact an authorized service technician |
HTR HIGH
|
Message appears if heater is above 285℉ for longer than 20 min
| Message disappears when temperature is back in range. If not, please contact an authorized service technician. |
HTR LOW
| Message appears if temperature falls 15℉ below setpoint | Message disappears when temperature is back in range. If not, please contact an authorized service technician. |
HOLD displays on screen
| - Only for 3X4 Bin display boards
- Operator changes bin address
- Unit is being calibrated
| Message will display when operator is done making changes |
WAIT displays on screen
| The operator is making changes to the product profile when in stand alone mode | Message will disappear when operator is done making changes |
INIT displays on screen
| Operator is switching unit from Kitchen Minder to stand alone mode | Message will disappear once Bin learns Kitchen Minder menus |
COMM DOWN displays on timer bar
| Bin is not communicating with Kitchen Minder | Please contact an authorized service technician |
Modular Holding Bins
Troubleshooting
Issue | Cause(s) | Solution
No power (s) |
No power
|
- Power switch is in the OFF position
- Power cord is not plugged in
- Cover or end cap is missing or not connected
|
- Turn power switch to the ON position
- Make sure the power cord is plugged into the correct outlet
- Tighten the 3 screws on the module and cover and make sure the end cap is present on the right side of the last base
|
Units will not heat/power on
|
Units are not securely connected
|
- Tighten the 3 screws on the module cover and make sure the end cap is present on the right side of the last base.
- Check and tighten the screws holding the bases together, and make sure the expansion bases are powering on
|
Unit will not heat
Unit heats but the display does not work
|
- Wrong power cord is in use
- There is a loose connection on the power switch and/or heater
Please call an authorized service technician
|
Please call an authorized service technician
|
Unit heats but the display does not work
|
- Timer bar wiring is disconnected
- Module unit does not work
|
Please call an authorized service technician
|
Unit under/overheats
|
Check the temperature settings
|
Please call an authorized service technician
|
Error Codes
Error Codes | Cause | Reason |
E01 | Upper Sensor Error |
The upper sensor is shorted or open and both heaters will shut off
|
E02 | Lower Sensor Error |
The upper sensor is shorted or open and both heaters will shut off
|
E03 | Upper Heater Error |
The heater is open and/or the heating relay is shorted or closed
|
E04 | Lower Heater Error |
The heater is open and/or the heating relay is shorted or closed
|
E05 | Recover Error |
The set point temperature was not reached in time
|
E06 | Non-Volatile Memory Error |
The memory was corrupted in the main base
|
E07 | Configuration Error |
The unit was unable to set configuration during power up
|
E08 | USB File Upload Error |
The USB file was corrupted and could not be uploaded
|
E09, E10, E11, E12, E13, E14, E15
| Reserved |
Please Contact an authorized service technician
|
For more information on Prince Castle holding unit troubleshooting, maintenance and programming, please check our extensive collection of Prince Castle manuals. Need a replacement part for your DHB, EHB or modular holding unit? We got those, too, in the most in-stock Prince Castle parts catalog on the planet!
Please contact a local authorized service agent who can help with these specific units and all your commercial equipment needs.
