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FlowMax · Combi boiler

E22 Parameter programming request

Medium severity FlowMax condensing combi (FLOWMAX-90/120)

What the control is telling you

The board has lost its parameter memory and the parameters must be reprogrammed.

Applies to: FLOWMAX-90, FLOWMAX-120

Likely causes

  • Loss of microprocessor memory

Test and repair steps

  1. Enter the parameter menu switch OFF, then switch ON while holding '+' and '-' until 'PL' - '0' shows; release.
  2. Hold 'S' and press '+' to pick a parameter; release 'S', press 'S' again to show the value.
  3. Set each parameter with '+'/'-' (e.g. P1 water heater type, P2 gas type 00 = natural gas / 01 = propane, P3 heating range) and press 'S' to confirm.
  4. Switch the unit off and on again so the new settings take effect.
  5. If memory is lost again, suspect the control board.

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Source: FlowMax FLOWMAX-120 Instruction Manual, 6.10 Troubleshooting table, p.66; FlowMax FLOWMAX-120 Instruction Manual, 6.11 Diagnostics error code list, p.67; FlowMax FLOWMAX-90 User Manual, Diagnostics - Error codes, p.8-9; FlowMax FLOWMAX-120 Instruction Manual, 5.2 Setting the parameters, p.40. Summarized in our own words; check the original manual for your model.

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