Douglas Machines Pot and Pan Washer Error: PGM LED 2 Flashes
Two flashes of the PGM light, then a pause of about three seconds, mean a timeout while filling above the level probe. Water kept coming for more than five minutes after it reached the probe. Close the water supply valve if the tank is overfilling, clean the probe and float switch, and call us if it returns.
Medium: an overfilling tank can spill hot water, so the supply should be closed until it is checked.
- Code
- PGM LED 2 flashes
- Maker
- Douglas Machines
- Equipment
- Pot & pan washers
- Applies to
- 1827 PC board (in use since 1999; PGM LED blink count, pause 3 s)
What does Douglas Machines PGM LED 2 flashes mean?
On Douglas washers with the 1827 PC board, two flashes of the PGM light are the overfill message. The board opens the fill valve until water reaches the level probe, then expects the valve to close. If the valve stays on for more than five minutes after the water reached the probe, the board decides that something is wrong and flags the timeout. In other words, the water keeps coming when the board expects it to have stopped. That sets this apart from one flash, where water never arrives. Here the likely suspects are on the other side: a fill valve that does not close fully, a level probe that reads wet when it is not so the board has the wrong picture, a float switch stuck in position, or water pressure surging through the valve. The maker's guidance is practical. If water is running over or into the tank continuously, close the water supply valve first, and then clean the float switch and the level probe as part of the daily cleaning. A machine that overfills while heating can also let hot water spill, which makes this more urgent than a simple fill delay.
Affected models and control systems
Douglas door-type pot, pan and utensil washers with the 1827 PC board in use since 1999. The PGM light flashes the count, then pauses about three seconds.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- The PGM light flashes twice, pauses, and repeats
- Water keeps running into the tank
- The tank overflows or water drains continuously
- The wash does not start properly
Possible causes
Listed in Douglas Machines's documentation
- Fill valve not closing fully
- Level probe reading wet when it is not
- Float switch stuck in position
- Water pressure surging through the fill valve
Other likely causes — what usually sits behind PGM LED 2 flashes on this control. A technician confirms which one it is before any part is replaced.
- A grain of scale lodged on the fill valve seat holding it slightly open
- Probe wiring with a leaky connection that makes the board read the wrong level
Safe checks before calling for service
- Count the flashes with the pause between them.
- Close the water supply valve if water is running over or into the tank continuously.
- Clean the float switch and the level probe, as the maker's daily cleaning calls for.
- If two flashes return after cleaning, call us. Do not leave the machine heating while it overfills.
- Tell us whether the tank overflowed or just stayed full.
How a technician diagnoses PGM LED 2 flashes
- Confirm two flashes and observe a fill while watching the level.
- Check whether water continues past the probe when the valve should be closed.
- With power off, inspect the fill valve for debris on the seat and measure its coil.
- Check the level probe and its wiring for leakage and the float switch for sticking.
- Check supply pressure for surges.
- Replace the valve or probe that fails the test and run a fill to confirm it stops.
- Water that will not stop can spill hot water, so the supply is shut off first.
- Telling a valve that does not close from a probe that reads wet takes a watched fill and a meter.
- The fill valve coil and the probe wiring are mains-side work.
How PGM LED 2 flashes differs from similar codes
One flash on the same board means the fill never reached the probe; two flashes mean it kept filling after it did.
Technical reference
- Document
- Douglas Machines Troubleshooting Guide (2024 edition), Troubleshooting (1827 board) p.14-15
- Edition
- 2024 edition
- Models / control
- 1827 PC board (in use since 1999; PGM LED blink count, pause 3 s)
- Section
- Troubleshooting - Error Code Value Table (PGM LED) printed pp. 14-15; Touch Pad Error Code Value Table printed p. 26
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Douglas Machines pot & pan washer error codes
What is the difference between one and two flashes?
One flash is a fill that never reached the probe. Two is a fill that went on too long after it did.
Should I turn off the water?
Yes, if it is running over or into the tank continuously.
Can a dirty probe cause it?
Yes. It can read wet when it is not, so cleaning is the first step.
Need help with Douglas Machines PGM LED 2 flashes?
A technician confirms the cause on site and gives you the price in writing before any work starts.