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a four-digit code. This code is known to the boiler manufacturer and the
company Tech.
V. Protections
To ensure maximally safe and unfailing operation, the regulator has a
number of protections. In the case of an alarm, a sound signal is activated and
an appropriate message is shown on the display.
To make the controller return to operation, press the pulse generator.
Thermal protection
V.1.
It is an additional bimetallic mini-sensor (located at the boiler temperature
sensor), disconnecting the fan and the feeder in the event of exceeding the
alarm temperature: 85
from boiling , in the event when the boiler overheats or the controller is
damaged. After activation of this protection, when the temperature goes down
to a safe value, the sensor will unlock automatically and the alarm will be
deactivated. In the case of damage or overheating of this sensor, the fan the
and feeder will be disconnected.
Automatic sensor control
V.2.
In the event of damage of each of the sensors the sound alarm is activated,
additionally signalling , the defect on the relevant display, e.g.: "CH sensor
damaged". The feeder and the blow-in is disabled. The pumps operate
according to the set temperatures, regardless of alarms.
V.3.
In the case of damage of the CH sensor or the feeder, the alarm will be
active until the sensor is replaced with a new one. If the HUW sensor is
damaged, one should press the menu button, which will turn off the alarm and
the controller will return to the one pump (CH) operation mode. In order to
ensure that the boiler will be able to work in all modes, the sensor must be
replaced with a new one.
Temperature protection
V.4.
The regulator has an additional protection in the event of damage of the
bimetallic sensor. After exceeding the temperature of 85ºC, the alarm is
activated, signalling the following on the display: "Temperature too high".
Despite damage of the bimetallic sensor, the controller receives information on
the current temperature in the boiler from the electronic sensor. In the case of
exceeding the alarm temperature, the fan is turned off and, at the same time,
both pumps begin to operate in order to distribute hot water across the house
ST – 450 z PID
O
C. Its activation prevents the water in the installation
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