4 Service and maintenance
When connect CN-CNT connector with computer
Please use optional USB cable to connect with CN-CNT
connector.
After connected, it requests for driver. If PC is under Windows
Vista or later version, it automatically installs the driver under
internet environment.
If PC uses Windows XP or earlier version and there is no internet
access, please get FTDI Ltd's USB - RS232C conversion IC
driver (VCP driver) and install.
http://www.ftdichip.com/Drivers/VCP.htm
If forget Password and cannot operate remote controller
Press
Password unlock screen appears, press Confi rm and it shall
reset.
Password will become 0000. Please reset it again.
(NOTE) Only display when it is locked by password.
Maintenance menu
Setting method of Maintenance menu
Maintenance menu
Actuator check
Test mode
Sensor setup
Reset password
Select
Press
Items that can be set
1 Actuator check (Manual ON/OFF all functional parts)
(NOTE) As there is no protection action, please be careful
not to cause any error when operating each part (do
not turn on pump when there is no water etc.)
2 Test mode (Test run)
Normally it is not used.
3 Sensor setup (offset gap of detected temp of each sensor
within -2~2°C range)
(NOTE) Please use only when sensor is deviated.
It affects temperature control.
4 Reset password (Reset password)
28
for 5 sec.
17:26, Wed
Confi rm
for 5 sec.
Custom menu
Setting method of Custom menu
Custom menu
Cool mode
Back-up heater
Reset energy monitor
Reset operation history
Smart DHW
Select
Please press
Items that can be set
1 Cool mode (Set With/Without Cooling function) Default is
without
(NOTE) As with/without Cool mode may affect electricity
application, please be careful and do not simply
change it.
In Cool mode, please be careful if piping is not
insulated properly, dew may form on pipe and water
may drip on the fl oor and damage the fl oor.
2 Backup heater (Use/Do not use Backup heater)
(NOTE) It is different from to use/not to use backup heater
set by client. When this setting is used, heater
power on due to protection against frost will be
disabled. (Please use this setting when it is required
by utility company.)
By using this setting, it cannot defrost due to low
Heating's setting temp and operation may stop
(H75)
Please set under the responsibility of installer.
When it stops frequently, it may be due to
insuffi cient circulation fl ow rate, setting temp of
heating is too low etc.
3 Reset energy monitor (delete memory of Energy monitor)
Please use when moving house and handover the unit.
4 Reset operation history (delete memory of operation history)
Please use when moving house and handover the unit.
5 Smart DHW (Set Smart DHW mode Parameter)
a) Start time: Tank reboil at lower ON Temp. onward.
b) Stop time: Tank reboil at normal ON Temp. onward.
c) ON Temp.: Tank Reboil Temp when Smart DHW start.
17:26, Wed
Confi rm
for 10 sec.