Operation8
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!42
Service Mode menu
Step 1
[1/2/0| Shows currently measured space heating water temperature in °F. Also see paragraph 13.3.
Step 2
To activate service mode 1st step:
Press and hold the
d button for more than 2 but not longer than 5 seconds.
Step 3
[1/2/0]
The non-flashing dot is shown in the right-hand bottom corner of the display shows the boiler is now in
Flue gas test mode.
Step 4
To activate service mode 2nd step:
Simultaneously press and hold the
d+ e buttons for more than 2 seconds.
Step 5
[l/?/?]
Display shows the maximum capacity setting during heating mode in %. Also see paragraph 13.4.
In this case:
[l/?/?] = 100 %. Service mode has been activated.
You can now adjust the boiler performance to partial load, i.e. to check the gas/air ratio or the ionization current.
Step 6
Press and hold the c button until the display shows:
for boilers at sea level
[l/2/5] with a 80-kW boiler or [l/2/0] with a 100-kW boiler
for boilers at high altitude
[l/3/6] with a 80-kW boiler or [l/3/0] with a 100-kW boiler.
Step 7
For boilers at sea level (0-4000 ft):
[l/2/5] Display setting: with a 80-kW boiler and [l/2/0] with a 100-kW boiler.
For boilers at high altitude (4000-10,000 ft):
[l/3/6] Display setting: with a 80-kW boiler and [l/3/0] with a 100-kW boiler.
Minimum capacity setting during heating mode in %. Also see paragraph 13.4.
– The boiler will reduce its performance to 25 % or 20 % (sea level) or 36 % or 30 % (high altitude) respectively
within a couple of seconds.
– The space heating water temperature set on the BC10 basic controller (control panel) applies now.
– Check the gas/air ratio or the ionization current and if necessary set the gas/air ratio according to
paragraph 9.8 or paragraph 9.12.
Step 8
Press the e button.
Step 9
[f/\/5]
This parameter shows the pump run-over time in minutes that starts when the heating mode has ended.
Also see paragraph 13.4.
Step 10
Press the e button.
Step 11
[c/\/1]
This parameter indicates the DHW mode status setting. Also see paragraph 13.4.
Step 12
Press the e button.
Step 13
[1/2/0|
Shows currently measured space heating water temperature in °F. Also see paragraph 13.3.
Step 14
Press the e button.
Step 15
[p/2/2]
Shows currently measured system pressure in psi. Also see paragraph 13.3.
Step 16
Press the e button.
Step 17
[-/a/\]
Display code: Operating phase: The boiler is in service mode. Also see paragraph 13.5.
Step 18
After 30 minutes or after a power interruption the flue gas test ends automatically. To end manually press and
hold the
d button for more than 2 seconds until the dot disappears.
Step 19
The boiler input rating drops to the preset capacity, see the "Settings" menu (table 10).
Table 9 Service mode
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