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15.4 ERROR MESSAGES
As part of its operation, the heater is able to detect several error conditions indicated on its front panel.
If a critical error occurs, the heating is stopped. The error can be cleared by turning the heater off and on
using the switch (1).
Critical errors are indicated by flashing of all icons, except for the DZD logo. The error code is then displayed
on the thermometer (3) by flashing the corresponding number.
ERROR
ERROR NAME
VALUE
20 °C
Faulty heater
Faulty temperature
40 °C
90 °C
Overheated heater
Lower priority errors do not affect the heater function and are only indicated by constant flashing of the
value on the thermometer (3).
ERROR
ERROR NAME
VALUE
10 °C
Under-cooled heater
•
•
•
•
sensor
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Table 5 - critical error codes and their meaning
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Table 6 - low priority error codes and their meaning
PROBLEM DESCRIPTION / SOLUTION
The water temperature in the heater does not increasefor
more than 2 hours when the heater is active.
Check the heater connection or replace the heater
The temperature cannot be measured.
Check the temperature sensor wiring or replace it.
The water temperature in the heater is higher than 90°C.
If the heater is turned on, it should no longer heat the water.
If the problem persists, the relay may be faulty.
PROBLEM DESCRIPTION / SOLUTION
The water temperature in the heater is lower than 10 °C.
If the heater is turned on, it heats itself to the set
temperature. If the heater is in standby mode, the anti-
freeze function is automatically activated 15.4.2.
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