Monogram ZGP486ND - Failure Codes

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The last 7 Failure (F) codes are stored in the nonvolatile memory, accessed through the factory test mode. All
Failure (F) codes are suppressed from the display, except F2 and F9.
To access the last 7 F-codes, follow these steps:
1. Enter the factory test mode. (See Factory Test Mode.)
2. Press the Timer button to cycle through the factory test mode options.
3. Find the F-code menu. The display will show “F-co”.
4. Press the Mini-Knob button to enter this menu.
5. Press the Mini-Knob button to cycle through F-codes. Press the Timer button to return to the factory test
mode main menu.
Communication errors stored:
C1 – Communication Fail with Main Relay Board
C2 – Communication Fail with Upper Temp Encoder
C3 – Communication Fail with Upper Mode Encoder
C4 – Communication Fail with Aux. Relay Board
C5 – Communication Fail with Lower Temp Encoder
C6 – Communication Fail with Lower Mode Encoder
Failure Codes
(Continued Next Page)
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