This guide starts with the codes and code groups you will actually see. The full iGEM code reference is at the bottom if you need it.
Safety Notice: Error codes can indicate electrical, hydraulic, metering, configuration, security, or vapor-recovery conditions. Do not bypass safety devices or open energized dispenser cabinets. Follow the manufacturer’s documentation and applicable site procedures. Repairs involving electrical assemblies, metering, calibration, vapor recovery, security hardware, or fuel-handling components should be performed by qualified personnel.
First: Find the Code on Your Dispenser
Wayne Ovation: The display shows HH.MM / CC.DD.NN — time, error code, device number, nozzle number. Access the log through S21.XX (Side 1) or S22.XX (Side 2). Code 01 is the most recent.
Wayne Helix: The iGEM computer stores the last 50 codes per side.
Wayne Vista: Uses the Duplex II computer. Display format is S21.xx / S22.xx per side.
Write down the code, the device number, and which side it is on before calling anyone. That information saves time and helps identify the affected system.
Common Wayne iGEM Error Codes and Code Groups
Code 34 — Stop Button Pushed
What it means: The sale was aborted because the stop button signal was detected.
What to check:
- Is the button physically stuck? Press it and release it.
- Check the wiring between the button and the iGEM board.
- If the button and wiring are fine, the iGEM input may be faulty.
Part that may be involved: Stop button assembly or iGEM board.
Code 80 — Internal iGEM Error
What it means: The iGEM board hit an internal software exception.
Subcodes tell you more:
- 0 = Mail buffer pool exhausted
- 1 = Mail send failed
- 2 = XMalloc failed
- 3 = Print buffer overflow
What to check: Follow the manufacturer-approved reset procedure. If the code returns, document the subcode and have the power supply, wiring, software configuration, and iGEM board evaluated by a qualified technician.
Part that may be involved: iGEM board.
Code 99 — Hardware/Software Mismatch
What it means: The dispenser’s software does not match the installed hardware.
Subcodes:
- 0 = No proportional hardware
- 1 = No vapor recovery hardware
- 2 = Meter does not match F16.04
- 3 = Ovation II not enough updates installed
- 4 = Ovation II too many updates installed
What to check: Confirm the configuration matches the installed hardware. This is typically a configuration issue rather than a part failure — unless the meter mismatch (subcode 2) points to a wrong meter.
Meter Errors (Codes 50–56, 62–73)
What they mean: The meter is reporting jitter, reverse flow, or lost communication.
Common codes in this group:
- 50 — Jitter during a sale
- 51 — Jitter while idle
- 58/59 — Meter not communicating with iGEM
- 70/71 — No flow detected
- 72/73 — Flow lost during sale
What to check: A technician should determine whether the issue originates in the meter, pulser, wiring, configuration, or hydraulic system before replacing components. For communication codes (58/59), check the wiring to the meter. For no-flow codes (70–73), check for air in the line, a closed valve, or a failing pump.
Part that may be involved: Meter or pulser.
Vapor Recovery Errors (Codes 42–49)
What they mean: WayneVac system fault. Motor state does not match fuel flow, wrong rotation, or corrupted sensor signals.
What to check: These require a qualified service technician. Do not bypass the vapor recovery system.
Memory Errors (Codes 1–18)
What they mean: Corrupted data in iGEM memory — program, unit prices, totals, timestamps, or security data.
What to check: Follow the manufacturer-approved reset procedure. If the code returns, further diagnosis of power quality, connections, configuration, and board condition is required.
Part that may be involved: iGEM board.
Communication Errors (Codes 30–31, 58–59)
What they mean: The dispenser lost communication with the POS or the meter.
What to check:
- POS connection and configuration.
- Wiring between the dispenser and controller.
- For meter communication (58/59), the WIP connector.
Sale Cannot Start (Codes 25, 27, 28)
What they mean: The dispenser is blocking a sale for a configuration reason.
- 25 — Unit price not set
- 27 — Unit price changed too close to sale start
- 28 — Sale requires preset keypad entry
What to check: These are configuration issues. Check the relevant function settings before replacing any part.
Should You Order a Part or Call a Technician?
Order a part only after the component has been identified and the replacement procedure is permitted for qualified service personnel.
Call a technician if: The code involves vapor recovery, calibration, fuel temperature boards, electrical assemblies, or security hardware.
Follow the manufacturer-approved reset procedure first if: The code is a memory error (1–18) or communication error (30–31, 58–59). Do not open or service the dispenser unless the equipment has been safely isolated and the work is performed by qualified personnel.
Check warranty if: The dispenser remains under warranty. Confirm the warranty terms before using a non-approved replacement or performing service.
If you are not sure: Send us the model, code, and device number. We help identify the correct part before you order.
How to Prevent Repeat Codes
Most codes that return after a repair share one cause: the underlying condition was not fixed.
- Memory errors may return if power quality is poor or connections are degraded.
- Communication errors may return if wiring is not corrected.
- Meter errors may return if the meter is worn, not just the pulser.
A maintenance schedule that may reduce error frequency:
- Replace filters according to the manufacturer’s maintenance interval, observed flow restriction, fuel quality, throughput, and site procedures.
- Inspect hoses and nozzles regularly.
- Check error logs periodically.
- For critical high-volume sites, evaluate a documented spare-parts strategy based on installed equipment, failure history, lead times, and configuration requirements.
Full iGEM Error Code Reference
Click to expand the full code table (60+ codes)
| Code | Error | Notes / Subcodes |
|---|---|---|
| 1 | Flash program CRC error | — |
| 2 | Flash template CRC error | — |
| 3 | RAM Error | — |
| 5 | RAM error log CRC error | — |
| 6 | RAM function programming CRC error | — |
| 7 | RAM unit prices CRC error | — |
| 8 | RAM statistics CRC error | — |
| 9 | RAM event log CRC error | — |
| 10 | RAM totals CRC error | — |
| 11 | RAM totalizers CRC error | — |
| 12 | RAM Electro-mechanic totalizers CRC error | — |
| 13 | Identi-PROM CRC error | Device #0=Display, #1=CPU |
| 14 | RAM Timestamps CRC error | — |
| 16 | Suppress overflow limit reached | Functions 19.12/19.22 |
| 17 | RAM meter data CRC error | — |
| 18 | RAM Door Security Data CRC Error | — |
| 20 | Consecutive display read back error | 0=Sales, 1=Unit price, 2=Preset |
| 25 | Sale cannot start — Zero Unit price | — |
| 27 | Sale cannot start — Unit price changed | Function 23.04 |
| 28 | Sale cannot start — Need preset entry | Function 24.01 |
| 30 | No communications with POS timeout | Function 23.02 |
| 31 | POS buffer overflow (DART) | — |
| 34 | Sale aborted — Stop Button pushed | — |
| 35 | Blend ratio out of tolerance | Functions 7.02–7.04 |
| 39 | Pulse output lags by more than 1 second | — |
| 42 | Vapor recovery motor on when it should be off | WayneVac |
| 43 | Vapor recovery motor on when it should be on | WayneVac |
| 46 | Vapor recovery motor turning wrong direction | WayneVac |
| 47 | Illegal sensor states from vapor recovery | WayneVac |
| 48 | Vapor recovery motor load high | WayneVac |
| 49 | Vapor recovery motor load low | WayneVac |
| 50 | Jitter/Reverse limit on In-Transaction WIP | Function 17.00 |
| 51 | Jitter limit on idle WIP | Function 17.01 |
| 54 | Reverse flow limit on idle WIP | Function 16.03 |
| 56 | Forward flow limit on idle WIP | Functions 19.14/19.24 |
| 58 | Communication lost to In-Transaction WIP | — |
| 59 | Communication lost to idle WIP | — |
| 62 | WIP outputting jitter during calibration | — |
| 67 | Meter calibration OK bit status changed | — |
| 68 | Meter calibration door status changed | — |
| 69 | Meter last calibration status changed | — |
| 70 | Timeout reached for No Flow | Function 17.03 |
| 71 | Consecutive No Flow timeouts | Function 17.04 |
| 72 | Timeout limit for flow lost during sale | Function 17.03 |
| 73 | Consecutive Flow Lost timeouts | Function 17.05 |
| 74 | Sale terminated before preset limit | — |
| 75 | Consecutive unfinished fillings | Function 17.06 |
| 76 | DEF Low Temperature Event | 1=Low Temp, 2=Cleared |
| 77 | Additive Error | 0=Config error, 1=CAN comm error, 2=Tank empty, 3=Tank door open, 4=Motor failure, 5=Injection fell short, 6=Flow error |
| 80 | Software exception | 0=Mail buffer, 1=Mail send, 2=XMalloc, 3=Print buffer |
| 90 | Fuel temperature board communication failure | FTB |
| 91 | FTB temperature probe shorted | FTB |
| 92 | FTB temperature probe shorted | FTB |
| 94 | ATC configuration error | — |
| 95 | Fuel Temp Board Calib error | FTB |
| 96 | Dispenser security breached | 1=Bezel door, 2=Hydraulic door |
| 97 | Dispenser security armed status change | 0=Unarmed, 1=One-Shot, 2+=Maint Mode |
| 98 | DEF errors | Device (D), Side (S) |
| 99 | Hardware/Software mismatch | 0=No proportional HW, 1=No vapor recovery HW, 2=Meter mismatch, 3=Ovation II not enough updates, 4=Ovation II too many updates |
Source: Dover Fueling Solutions — Select G7200 Installation & Operations Manual, 920812 Rev R (April 2019), Appendix J.
Note: Code definitions may vary by dispenser model, software version, and regional configuration. Always consult the manual applicable to the installed unit.
FAQ
What does Wayne code 34 mean?
Sale aborted because the Stop button was pushed. Check the button and its wiring.
What does Wayne code 80 mean?
Internal iGEM software exception. Follow the manufacturer-approved reset procedure. If it returns, have the power supply, wiring, and board evaluated by a qualified technician.
How do I access error codes on a Wayne Ovation?
S21.XX for Side 1, S22.XX for Side 2. Code 01 is the most recent.
How many error codes does a Wayne Helix store?
The last 50 per side.
Do you carry replacement iGEM boards and Wayne parts?
HSO supplies OEM and aftermarket components for Wayne dispensers, including iGEM boards, displays, meters, and hydraulic parts, subject to current availability. Browse pumps and dispensers.
Need a Wayne Part?
Send us your model, the error code, and the device number. We help identify the correct part before you order.View Catalog Request a Quote
HSO Petroleum Services also provides calibration and maintenance services for Wayne dispensers.
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