69
④ Timing ON/OFF indication (
)
:
Indicate the timing information.
⑤ Function icon:
:
Display
s
when water heater system connects to Modbus network;
:
Displays when other heat source is provided to the system.
:
Displays when water heater maintenance is needed. Press and hold ‘
AUXILIARY
’ key for
3 seconds to cancel the icon and timing will restart until next maintenance.
:
Displays when cycle heating function is on.
:
Displays when electric auxiliary heating function is on.
:
Displays when check function is on.
:
Displays when ambient temperature is below 2ºC which means the main unit need
s
anti-freezing action.
:
Displays when no key operation for 2 minutes and all keys are locked. Press and hold
‘
OK
’ key for 3 seconds to unlock.
:
Displays when error or protection occurs and means the unit need
s
maintenance by
professionals.
⑥ Online quantity indication:
Under normal status display
s
the quantity of units connected to the
wired controller; under check status display
s
the device serial number.
⑦ Water level indication:
Under normal status displays water level; under water level setting status
displays setting value.
⑧ Clock:
Under normal status displays clock; under timing setting displays the setting timing.
⑨ Water temperature:
Under
normal status display
s
water temperature; under water temperature
setting status displays the setting value; under cycle heating water temperature setting status displays
the setting value; under check status displays check parameter.
⑩ ON/OFF key (
):
Turn on and turn off functions.
11
Right and left key ( and
):
Press these keys to check setting water temperature, setting cycle
heating water temperature and setting water level under main page; press right key to shift to the next
$OOLDQFHR410A Direct Heating Type HPWH 50Hz Technical Manual MCAC-HTSM-201801
