Pitco Commercial Fryer Error Code drn tUrn oFF: Drain Valve Open
Drn tUrn oFF on a Pitco Solstice digital solid state control means the controller sees the drain valve as open while the fryer is on. Verify the drain valve is closed and check its proximity switch. The operator manual says to turn the appliance off, close the drain valve and turn it back on.
High: the fryer will not heat while the drain valve reads open.
What does Pitco Drn tUrn oFF mean?
The digital control shows drn tUrn oFF, which the operator manual writes as drAininG Turn oFF. A proximity switch on the drain valve tells the controller whether the valve is shut. If it reads open while the fryer is on, the controller refuses to heat and asks for the fryer to be turned off. The reason is plain: heating a vat that is draining or empty is dangerous. The service manual says to verify the drain valve is closed and to check the proximity switch on the valve. The operator manual describes what to do in the kitchen: turn the appliance off, close the drain valve, and turn it back on. If the valve is truly closed and the message returns, the switch, its magnet or its wiring is not reporting correctly and a technician should check it.
Affected models and control systems
Pitco Solstice and Solstice Supreme SG/SSH series high-efficiency gas fryers. This page covers the digital solid state control (manual p. 83).
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
- Drn tUrn oFF on the digital display
- Fryer will not heat
- Drain handle not fully shut
Possible causes
Likely causes — what usually sits behind Drn tUrn oFF on this control. A technician confirms which one it is before any part is replaced.
- Controller sees the drain valve as open
- Drain handle not pushed fully closed after filtering
- Proximity switch out of position
- Switch wire loose or oily
- Valve not seating all the way
Safe checks before calling for service
- Turn the fryer off.
- Push the drain handle fully to the closed position.
- Turn the fryer back on.
- If it stays on, write down the display and call us.
How a technician diagnoses Drn tUrn oFF
- Confirm the drain valve is mechanically closed.
- Check the proximity switch gap and magnet.
- Test the switch for continuity when closed.
- Inspect the wiring back to the controller.
- Adjust or replace the switch and test a heat-up.
- The drain valve is beneath a vat of hot oil, near gas and 24 VAC circuits.
- Setting a proximity switch gap needs the fryer cool and the right tools.
How Drn tUrn oFF differs from similar codes
Drn tUrn oFF is the digital control's drain valve message; DRAINING / TURN OFF is the same message on the computer control.
Technical reference
- Maker documentation
- Pitco owner support
- Edition
- L22-345 R0
- Models / control
- Digital Solid State control
- Section
- Digital Solid State Control (p. 83)
- 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 Pitco fryer error codes
Why does the fryer refuse to heat?
It thinks the drain valve is open, and heating an empty or draining vat is dangerous.
What does the operator do first?
Turn the fryer off, close the drain valve and turn it back on.
Why does it return?
The proximity switch may not be reading the closed valve.
Need help with Pitco Drn tUrn oFF?
A technician confirms the cause on site and gives you the price in writing before any work starts.