Using the water heater via a WiFi connection is possible only with provided by the producer WiFi
modem. For further information contact the manufacturer / supplier of your water heater.
4.6а Controller version
Once the arrow „down“ is pressed from the screen „WiFi connection“, proceed to the information
screen with the version of the controller and software in it.
4.7 Diagnostics
Next pressing of the Enter button shall display the last
information screen
„Diagnostics“
, which consists of a list of
information about every registered problem and the exact
time and date of its occurrence. If these are more than three
with the arrows „down“ and „up“ shall be displayed the next
page. By holding the Enter key for over two seconds the
accumulated diagnostic information shall be cleared. The
symbol „star“ marks both the latest and the newest
registered issue. The messages that you can see on this
screen are the same as reports of failures and errors listed
in Table 6.
5. UNIT MODES
5.1 Protection modes
The protection modes are designed to protect the installations of the boiler, the solar collector and
the water heater in case of extreme operative conditions. Whether the water heater is on or off and
notwithstanding in which mode it works, the thermostat shall continuously monitor the temperature
as the water in the water tank and the solar collector. If necessary, the protection mode shall be
switched on for:
•
Anti-freezing protection of the solar collector
(NHC-H52M-1S / NHC-H52M-2)
. This
protection brings heat from the water heater to protect the solar collector from freezing. It
activates when the temperature measured in the collector falls below
„Solar protection“
limit on row
„Anti-frost temp.“
. This function may be switched off from the same menu
line
„Solar anti-frost“
.
•
Protection from freezing of the water tank
(
NHC-H52M-1S / NHC-H52M-2
). The
electric heater is activated if the temperature in the water tank falls below 3 degrees.
•
Protection against overheating of the solar collector (NHC-H52M-1S / NHC-H52M-2).
If the temperature of the solar collector gets above 90 degrees, the circulation pump of
the solar shall switch on regardless of the temperature difference. The pump will switch off
if the water temperature in the tank gets above 85 degrees.
•
Protection against overheating of the water tank
(
NHC-H52M-2)
. For available and
activated heating system. If the water temperature in the middle of the water heater
(measured by t5) exceeds 80 degrees and the water temperature in the boiler is below 50
degrees will turn on the heating system pump for release of the accumulated heat. The
pump will operate until the temperature falls to 76 degrees on the same thermo-sensor or
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