FAULT FINDING AND DIAGNOSIS
6 720 803 800 (2012/11)
63
7.5.5
RESET TO FACTORY SETTINGS
To reset any or all changes made in menu 2 back to the factory defaults
setting:
1. Press and hold the
,
and
arrow button for at lest five
seconds.
The screen will then display code 8E with the spanner symbol.
2. Press the
button and “Reset” will be displayed with the tick
symbol for three seconds.
After three seconds the screen will revert to the normal operation
screen.
Fig. 129 Reset sequence
7.5.6
MENU 3 - BOILER MAXIMUM & MINIMUM LIMITS
The menu shows the boiler's minimum and maximum limits. Which can
be adjusted in this menu.
The boiler will revert to adjusted settings in Menu 3 following a power
interruption.
Menu 3 cannot be factory re-set.
1. Select menu 3 via the
and
scroll buttons.
2. Press and hold the
button for at least 5 seconds to enter Menu 3.
To modify setting, select desired menu option (refer to table 19) via the
and
arrow buttons and press the OK button, the option will
flash.
Adjust the parameters using the
and
arrow buttons and press
the OK button to confirm.
A
symbol will be displayed for three seconds to confirm the update
of the new value.
2.3C Anti fast cycle flow
temperature
hysteresis
(negative tolerance
only)
This sets the temperature drop
before the burner re-starts, 6°K
is the default. This is used in
conjunction with the “Anti fast
cycle time”
The range is from 2 to 15°K in
1°K steps.
2.3F CH delay after DHW
demand
The default time is 2 minutes
and can be adjusted to be
between 0 and 30 minutes.
This feature helps to keep the
DHW heat exchanger hot if
frequent demands are made.
The boiler will not burn extra
gas.
CH will not be heated during
this set time period.
2.5F Service reminder
time
Between 1 and 72 months can
be set
2.7A Operation/fault
indicator (blue
light) activation
0 = The blue light will only
operate as a flashing fault alert.
1 = The blue light will operate
as a boiler operation and fault
alert. This is set to 1 by default.
2.9E Turbine signal
delay
Delay time set to ignore a
temporary DHW demand.
Maximum delay is three
seconds which can be set in
¼ second increments,
e.g. 0.5 seconds is displayed as
2 or 1 second as 4.
2.9F Pump post purge
time for CH
The default pump overrun time
is 3 minutes. This can set
between 3 and 30 minutes. The
actual time will be affected by
the Pump Energy Saving mode.
NOTICE:
Menu 3
▶ Any changes made in Menu 3 are not reset via these
actions.
Para
No.
Parameter
Description
Updated
valve
Table 18 Menu 2 parameters
ok
reset
°C
Eco
°C
°F
°C
°F
Reset
°C
°F
Eco
~5 s
~3 s
reset
ok
+
+
6720646608-102.1W
o
1.
2.
ok
