Immergas Victrix fault 02

Safety thermostat function block (NTC flow/return overheating)

Gas boiler

What it means

During normal operation, if a fault causes excessive overheating internally, the boiler goes into overheating block.

Likely causes

  1. Excessive internal overheating due to a fault
  2. Fault causing excessive internal overheating
  3. Boiler lockout condition triggered (specific cause not detailed in this section)
  4. Lack of water in the appliance
  5. Little water circulation in the system
  6. Blocked pump

Where to start

  1. Press the Reset button
  2. Check display for indicator 21 activation
  3. Check display indicator 19 for any accompanying error code

The full answer, free

  • 19 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 56), right under the answer

Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Immergas manual for the Victrix. Check the model on the data plate before you order parts.

Other Immergas Victrix fault codes