Error messages
When the water heater is on, if there are any registered errors, a blinking
Error
sign appears in the
bottom section of the screen, above the field Measured and set parameters. You can see the
information about the error from the field Measured and set parameters. To do so, press the
View/Enter
button as many times as needed to get to the error message. If there are more than one
errors at the same time, they appear successively when pressing the
View/Enter
button.
Clearing the errors
The controller has a diagnostic mechanism for the temperature sensors, the anode protector,
alternating current leakage to the water and heater's performance. Some of the error messages
disappear when the relevant problem is solved, but some of them need to be cleared manually to see
if the problem is solved. To do so, turn off the water heater. When the screen view is in Design I,
press and hold for more than 2 seconds the
F
button to enter Settings mode, menu
Clear Errors
. By
pressing the
▲
button select line
Yes
and press
F
again to save your choice and go back to the main
screen in Design I.
NHC-H42 safe modes
Safe modes are designed to protect the boiler's and solar collector's installations and the water
heater if extremal work conditions occur. Doesn't matter if the water heater is on or off, or which
work mode is currently activate, the temperature regulator always monitors the temperature of the
water in the tank and of the solar collector. If necessary, it activates any of the following safe
modes:
•
Preventing the solar collector's freezing. This safe mode transfers the heat from the water
heater to the solar collector to protect its installation from freezing. It activates if the
collector's temperature is below 4°C.
•
Preventing the tank's freezing. The electrical heater turns on if the temperature in the water
NHC-H42-2 Reference Manual ver 1.6
стр. 16 / 18
Information about
the problem
Error sign
