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5500

Warning 5500 - Underfloor heating temperature limiter tripped

Bosch · Compress 7000 Heat Pumps

What does 5500 mean?

This warning means that the protective thermostat for your underfloor heating system has activated, likely due to exceeding a set temperature limit. This is a safety feature to prevent overheating.

Common Causes

  • Protective thermostat for the underfloor heating has tripped.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the underfloor heating thermostat if it has a manual reset button.

  2. 2

    If the warning reoccurs, consider adjusting your heat curve settings, typically making them less aggressive.

  3. 3

    If the problem persists, contact a qualified heating system technician or Bosch installer.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

1001/A2xNo communication betw. system controller and remote control — Room sensor error A21-A241010No communication via EMS BUS connection — Device not receiving EMS token1051No communication with external room temp. sensor module — Incorrect software setting for heating circuit 1
Source: Bosch Compress 7000 Heat Pumps
Open Manual (Page 25)Search more codes in this manual