Middleby Marshall Pizza Oven Alert Energy Saving Mode 2: Normal Operation
Energy Saving Mode 2 on a PS640 oven screen means normal operation, with the oven running in energy saving mode 2. The manual lists it as normal operation, not as a malfunction.
Low: a status alert listed as normal operation; the oven is working as designed.
- Code
- Energy Saving Mode 2
- Maker
- Middleby Marshall
- Equipment
- Pizza ovens
- Applies to
- Middleby Marshall PS640 series gas conveyor ovens (PS640G; manual also names PS670 in our citation)
What does Middleby Marshall Energy Saving Mode 2 mean?
Energy Saving Mode 2 is a second level on the PS640 control. The Screen Alerts table in Section 3 explains it in a single line: normal operation, oven is in energy saving mode 2. The control chooses this state on its own, usually when the oven has been waiting without product, so it is a status message and not a warning. There are no causes or actions in the table because nothing has gone wrong. The screen reads exactly Energy Saving Mode 2. The manual does not state what makes mode 2 different from modes 1 and 3, such as temperature drop or time in standby, so we do not invent those values. Treat it as a sign the oven is conserving gas while it waits. When product is loaded or the operator calls the oven back to baking, the control leaves the mode. If it stays in mode 2 while you are baking, the screen is still not reporting a malfunction, but a technician can check the settings.
Affected models and control systems
This alert is from the Middleby Marshall PS640 series gas conveyor ovens (PS640G). The manual's own citation also names the PS670, and the printed manual is P/N 60251 rev J.
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
- Energy Saving Mode 2 shown on the screen
- Chamber cooler than the baking setpoint
- Burner running less than during baking
Possible causes
Likely causes — what usually sits behind Energy Saving Mode 2 on this control. A technician confirms which one it is before any part is replaced.
- Oven was left on standby longer than the first energy saving period
- Energy saving timing in the control steps to mode 2 quickly
- A slow stretch with long gaps between pizzas let the oven settle into deeper standby
Safe checks before calling for service
- Read the screen text and confirm it shows Energy Saving Mode 2 and no other alert.
- Make sure the oven has been idle; mode 2 follows a quiet period.
- Bring the oven back to baking with the control's normal start step and allow it to reach the setpoint before loading the conveyor.
- If the oven drops back into mode 2 during busy service, write down how long it was idle and what the screen showed.
How a technician diagnoses Energy Saving Mode 2
- Read the control's alert list for any other message alongside mode 2.
- Review the energy saving timing settings with the shop owner.
- Measure how long the oven takes to return to baking temperature from this mode.
- Check burner ignition and blower start when the control calls for heat.
- If the oven is slow to leave this mode, the cause may sit in the gas valve or ignition circuit, which are live and not safe for operators to open.
- Changing the standby timing means entering the control's setup menus with the shop's own baking data.
- A hot conveyor oven can burn anyone reaching into the chamber or the burner area.
Technical reference
- Document
- PS640 Series Gas Ovens - Owner's Operating & Installation Manual (Single, Double and Triple stack)
- Edition
- P/N 60251 rev J, (c) 2023 Middleby Marshall Inc.
- Models / control
- Middleby Marshall PS640 series gas conveyor ovens (PS640G; manual also names PS670 in our citation)
- Section
- Section 3 Operation - Quick Reference: Troubleshooting, Screen Alerts table, printed p. 28
- 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 Middleby Marshall pizza oven error codes
Is Mode 2 worse than Mode 1?
The manual lists both as normal operation. It does not say in this table that one is more serious.
Should I call a technician for Mode 2?
Not for the message alone. Call only if the oven will not return to baking temperature.
Why did it go to Mode 2 on its own?
The control moves between energy saving levels by itself when the oven is not in use, which is what the manual calls normal operation.
Need help with Middleby Marshall Energy Saving Mode 2?
A technician confirms the cause on site and gives you the price in writing before any work starts.