Why Care About Machine Error Codes?

The rule of thumb.  If you wait.  It’s too late.

Code monitoring is critical to equipment maintenance and prevention of downtime.  No one wants a machine down.  When that occurs it costs time, money and manpower.  Train your employees and create an effective maintenance protocol.

  1. Monitor consistently. Setting up a schedule will allow catching an issue early.
  2. React quickly. Don’t wait.  A faster reaction time minimizes costs.
  3. Identify the Error. Having a plan includes employee education to understand what the various diagnostic error codes mean, as well as following the maintenance protocol in the manual.

And that brings us to our main point.  What DO these numeric error codes mean?

Most of the Douglas digital models are equipped with a programmable circuit board that assists in diagnosing common problems by displaying error codes on the digital display.  Digital models are LD-12-PT, LD-12-CPT, LD-20-PT, 1527, 1536, 1536-B, 1536-SPW, 2554, 2554-B, 2554-SPW, 2566 and 3072.

 

 

 

Here’s the most common code descriptions.

Er01       The machine has exceeded allowable fill time, which indicates low incoming water pressure.

Er02       The “Stop” button has been pressed during the wash cycle.

Er03       Excessive water loss during operation, which indicates the drain valve may be open.  This code may also be a result of not properly cleaning the interior of the machine, specifically the water probe.  A dirty water probe can cause false readings.  For optimum results, please follow daily maintenance protocol.

Er04       Control board error, which may indicate the board needs to be reprogrammed.  Contact us immediately!  

Er05       Operation of the machines has been attempted without adequate water in the tank.  Make sure the machine is filled to the level of the overflow. This code may also be a result of not properly cleaning the interior of the machine, specifically the water probe.  A dirty water probe can cause false readings.  For optimum results, please follow daily maintenance protocol.

Er06       The door has not been closed properly.

Er07       The pump overload protection device has been tripped.  Reset and contact the us immediately if problem persists.  

For other troubleshooting suggestions and diagnostics, please refer to the Douglas Machines Corp. Troubleshooting Guide.  It is a helpful resource that provides lots of great information.  

Require further assistance?  Please call Customer Service at 800-331-6870 or email our Customer Service Department.

 

Key Points in Diagnosing Issues:

  • Before attempting ANY troubleshooting operations, please ensure the power to the machine is TURNED OFF.
  • If you or the person performing these operations/functions feels underqualified or unsure of what actions to take or where these components are located, see your supervisor.
  • If issues persist after troubleshooting, please consult our Customer Service Department. Call our Toll-Free number 800-331-6870 or email.

Douglas Machines Corp. understands that issues will arise periodically, and our team is ready to assist in keeping your washing and sanitizing equipment and business running smoothly for years to come.

 

NEMA 4X Error Codes

Douglas Pan Washers feature NEMA 4X Controls, which have different error messages.

The PGM LED serves as an error code indicator.  In case of error, the LED flashes on and off at ½ second on and ½ second off and then pauses for 3 seconds.

The flashing pattern continues as long as the controller is in IDLE MODE.  The number of times the LED flashes between the 3 second pauses indicates the code number of the error.

Key Points in Diagnosing Issues:

  • When one of these errors occurs, the controller reverts to IDLE MODE.
  • The Error Code flashes on the LED as long as it is in IDLE MODE.
  • As soon as a successful machine cycle, Fill cycle, or Teach Fill cycle executes, the error LED goes out.

For other troubleshooting suggestions and diagnostics, please refer to the Douglas Machines Corp. Troubleshooting Guide.  It is a helpful resource that provides lots of great information. If issues persist or you'd like further guidance, please reach us Toll Free at 800-331-6870 or email our Customer Service Department.

 

PGM Error Code               PGM Error                      Interpretation

Error Code 1

Watchdog timeout on filling to level probeWhen the controller is in either a Fill cycle or a Teach Fill cycle, there's a 15 minute tme limit until the water level reaches the level probe.  If the fill valve is on for 15 minutes, the valve shuts off and the Fill cycle aborts.  The controller reverts to IDLE MODE.
Error Code 2Watchdog timeout on filling    above the level probeWhen in a Fill cycle or a Teach Fill cycle, there's a 5 minute limit for which the fill valve may be on after the water reaches the level probe.  This error could occur in a Fill cycle only if an incorrect time were stored in the EEPROM or readxd from the EEPROM.  In Teach Mode, this could occur if the operator walked away from the machine while it was in Teach Mode.  If this timeout occurs, the fill valve turns off and the machine returns to IDLE MODE.
Error Code 3Loss of master control relay during machine cycleThis error culd occur if the door was opened or if the motor overloads opened during a Wash or Rinse cycle.
Error Code 4Loss of water level during a machine cycleThis could occur in 2 situations:  A) If the water in the machine drops during a cycle because a large container being washed is collecting wash water OR B) The water level in the machine is very low and the wash water circulating in the pump and plumbing is enough to lower the water level below the probe.   The water level must be low for 5 seconds for the cycle to be aborted.  The heater output will, however, be turned off immediately when the water level is below the probe.
Error Code 5EEPROM read errorData stored in the EEPROM is redundant, and the 2 redundant numbers are compared.  If they don’t match, a read error is generated.  This error could occur if a Fill cycle is started, but a Teach cycle has not been done to program the Fill time.  It should not occur, as Douglas will program a Fill time as part of the test procedure.  The error may also occur if installing a new board.
Error Code 6Attempt to start a Fill cycle  or Teach Fill cycle when the water level is already at the level probeClear the code by starting a new cycle.
Error Code 7Attempt to start machine cycle without water to the level probeIf unit has water and a clean, low water probe, see Low Water Section of Troubleshooting Guide.