Drazice Short Cycling

Drazice water heater frequently cycles on and off over short intervals.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Thermostat hysteresis too small, thermostat located in stratified zone, oversized heater for small draw, sensor not fully inserted in well

Safety: Disconnect power before adjusting or replacing thermostats or sensors.

Steps:

On electronic models, check settings for differential or hysteresis if available and increase within allowed limits.
Ensure the main NTC sensor is fully inserted into its well and has good thermal contact.
On mechanical models, replace the thermostat if it has become overly sensitive or worn.
Verify that the heater is not installed in a way that causes rapid cooling of the sensor area (e.g., drafts directly on the sensor well).

Medium 3/5

Main NTC Temperature Sensor

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