Figure 3-7.38:
TEST RUN start screen and TEST RUN menu
7.14.2
POINT CHECK menu
MENU > FOR SERVICEMAN > TEST RUN > POINT CHECK
The
POINT CHECK
menu is used to check the operation of individual components. Use
▼▲
to scroll to the components
you want to check and press ON/OFF to toggle the on/off state of the component. If a valve does not turn on/off when its
on/off state is toggled or if a pump/heater does not operate when turned on, check the component’s connection to the
hydronic system main PCB.
Figure 3-7.39:
POINT CHECK menu
7.14.3
AIR PURGE operation
MENU > FOR SERVICEMAN > TEST RUN > AIR PURGE
The
AIR PURGE
operation is used to remove air from
the water piping. When the air purge operation starts,
the 3-way valve opens and the 2-way valve closes. 60
secs later the pump in the unit (PUMPI) operates for
10min during which the flow switch does not work.
After the pump stops, the 3-way valve closes and the
2-way valve opens. 60 secs later both PUMPI and
PUMPO operate until the air purge operation is exited
by pressing
OK
. If any error code is displayed during the air purge operation, the cause should be investigated. Refer to Part
3, 9 “Error Code table”.
Figure 3-7.40:
AIR PURGE display
Figure 3-7.41:
Test run turn off display
77
