Henny Penny OFG-391 Fryer Error Code E-48: Input System Error
E-48 means an input system error: the CPU cannot read the button digital inputs. Turn the switch off, then on. If it persists, re-initialize the control as described in the Programming section, and if it still persists, replace the control panel.
Medium: the panel cannot be operated, but no safety limit is involved.
- Code
- E-48
- Maker
- Henny Penny
- Equipment
- Fryers
- Applies to
- Henny Penny OFG-391 open gas fryer
What does Henny Penny error code E-48 mean?
The control panel has buttons, and the CPU reads their state through digital inputs. If it cannot read them, the control shows E-48, an input system error. The manual's action is in three steps: turn the switch off, then on; if it persists, re-initialize the control, following the Programming section; and if it still persists, replace the control panel. The buttons and the CPU are on the same assembly, so a failed input circuit usually means the panel is at the end of its life. Cooks may find that buttons do not respond, or that the display shows E-48 with no button pressed. Spilled liquid or grease on the panel can sometimes upset the inputs, so a clean, dry panel is worth checking. This differs from E-47, where the converter chip fails, and from E-41, where the stored programming is invalid. A technician starts with the simple things, such as a wet or greasy panel and a loose connector, before concluding that the input circuit has failed and the panel must be replaced.
Affected models and control systems
Henny Penny OFG-391 open gas fryer. The manual we used is a text viewer copy. E-48 is the input system error message on the OFG-391.
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
- E-48 on the controller
- Buttons do not respond
- Display shows E-48 with no button pressed
- Fryer cannot be operated from the panel
Possible causes
Likely causes — what usually sits behind error code E-48 on this control. A technician confirms which one it is before any part is replaced.
- Input system error (CPU cannot read button digital inputs)
- Moisture or grease on the panel
- Panel ribbon or connector loose
- Key membrane worn
Safe checks before calling for service
- Turn the switch off, wait a moment and turn it on.
- Wipe the panel gently with a dry cloth when the fryer is cool.
- Do not spray liquid onto the panel.
- If E-48 returns, call us.
How a technician diagnoses error code E-48
- Read the code and confirm E-48.
- Turn the switch off and on.
- Inspect the panel for moisture and damage.
- Re-initialize the control following the Programming section.
- Replace the control panel if it still persists.
- The control panel sits on line voltage.
- Re-initializing erases settings.
- A failed input circuit cannot be repaired in place.
How error code E-48 differs from similar codes
E-48 is the button input system; E-47 is the analog converter chip.
Technical reference
- Document
- Henny Penny OFG-391 manual, Error Codes (Section 1-4 / 4-2)
- Maker documentation
- Henny Penny owner support
- Edition
- Not printed on the pages opened
- Models / control
- Henny Penny OFG-391 open gas fryer
- Section
- Error Codes (continued), printed p.1-11 (page 305)
- 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 Henny Penny fryer error codes
Why do the buttons not work?
The CPU cannot read their digital inputs.
Is liquid a cause?
The manual does not say, but a wet panel is worth drying.
What is the last step?
Replace the control panel if it persists.
Need help with Henny Penny error code E-48?
A technician confirms the cause on site and gives you the price in writing before any work starts.