The Glass CHP · CHP

CHP unit does not start – what is the reason?

Ventilation/dehumidification — the silent 24/7 load, with heat recovery. Part of the glass family — like our glass BESS, biogas plant and CHP.

CHP unit does not start – what is the reason?
Outdoor air Fresh air Heat recovery Heating coil Hall Exhaust
Glass-box in 4 steps

Understand → See it live → What the AI does → Your benefit

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Understand
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What the AI does
Your benefit

What is "CHP unit does not start – what is the reason??"

Common causes: gas pressure below 20 mbar, safety chain not closed (emergency stop, door contacts), defective ignition, flat start battery, tripped grid protection or too low oil level — PLC status word provides the first indication.

The plant — right now

connect… · anonymous reference plant · read-only from the process control system, calculated in-house gas quantity … m³/h gas mixer … % gas level … % boost pressure … bar excerpt from … plant measurements. To the detailed explanation page with video →

What the AI reads from these values

What the AI reads
  • Gas pressure below 20 mbar (undersupply leads to termination of the start cycle)
  • Open safety chain (emergency stop or door contacts break the circuit)
  • Defective ignition or ignition electrode fault
  • Low oil level or battery voltage
Scenario

Monitored: continuous

The scenario: if the methane content decreases slowly, the engine begins to knock without an alarm occurring, leading to power reduction and wear. The AI: detects the quality trend early and reports it before the knocking causes damage. It identifies the trend before the limit value is reached.

Why this matters

Rapid identification of the cause of the fault minimises downtime and prevents damage to the ignition components. Monitoring of the gas pressure (reference value approx. 255.7) and the safety chain enables proactive maintenance. A clear error message in the PLC status word significantly reduces troubleshooting by technicians. Gas quantity (m³/h) · methane content (%) → — kWh/h calculation path: gas quantity × methane content × 9.97 kWh/m³ (methane calorific value)

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