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TEC/TEM owner manual
7.0 Error codes
When an error occurs, the Thermal Energy Controller and the Thermal Energy
Monitor will remind every minute that there is a problem in the system, jumping
to the reading that has its sensor disconnected. The service icon will also be
illuminated.
Err0 - collector thermistor short circuit
Err1 - storage thermistor short circuit
Err2 - mains temperature-sensor short circuit
Err3 - hot-outlet thermistor short circuit
Err4 - mains flow-sensor short circuit