1. Unable to heat (internal heating wire of the electric heater is burnt out or the wire at the junction box is broken)
3. Electric leakage (mainly the automatic circuit breaker or leakage protection switch trips, and the heating tube cannot heat). Usually, this type of fault accounts for more than 90% of electric heater failures.
1. If the heater cannot heat and the internal wire of the heating tube is broken, it can only be replaced if it cannot be repaired; if the circuit or connector is broken or loose, it can be reconnected.
3. If there is electric leakage, confirm the leakage point and consider it case by case. If it is the heating tube itself, it can be baked in an oven; if the insulation resistance cannot be increased, the heating tube may need to be replaced; if the junction box has water ingress, use a hot air gun to dry it; if the wire is damaged, wrap it with tape or replace the wire.
