
6 720 680 174 (2014/05)
Therm 8000S
Installation instructions | 33
8.5 Control board diagnostics
To access the diagnostic menu, proceed as follow:
▶ Press ON/OFF button to turn off the appliance.
▶ Press and hold "Program"
button and press ON/OFF
button to turn appliance ON.
▶ Release the
button when '188' appears on the display.
The display should read 'P2' when the program button is
released. If not, repeat process.
▶ Press and release the
button on the control panel until
the display reads 'P4'. You are now in the diagnostic mode of
the control board.
▶ When the display reads 'P4', press and release the
button once again and the display should read 'E.
▶ Use the
and
button on the control board to cycle
through different diagnostic modes available.
▶ Once in the selected diagnostic mode of your choice, press
and release the
button to display the diagnostic
information.
Example: to read the flow rate in litters per minute while the
unit is flowing water, cycle to the '3d' mode and press the
button. A reading of 25 on the display would indicate the heater
is reading a flow rate of 2.5 litters/minute.
Once the information is obtained,
▶ Press the
button again to return to the diagnostic
mode menu.
▶ Press
or
buttons until the letter “E” appears on
the display, to leave the diagnostic menu.
▶ Press
button and in the display appear ‘P4’.
▶ Press ON/OFF button to turn off the appliance.
▶ Press ON/OFF button to turn ON the appliance.
Heater is ready for normal operation.
8.5.1 Working hours
To see how many hours the appliance has worked, please enter
the “Diagnostic menu”;
▶ Select the sub-mode “H0”.
Write the number that shows in the display.
▶ Select the sub-mode “H1”.
Write the number that shows in the display.
▶ Select the sub-mode “H2”.
Write the number that shows in the display.
After checking the sub-modes H0, H1 and H2, introduce the
values in the table below;
8.6 Fan speed adjustment
Diagnostic menu
E
Entry/Exit into sub-modes
0d
Set-point temperature (ºC)
1d
Inlet water temperature (ºC)
2d
Outlet water temperature (ºC)
3d
Water flow (gallons/min) (l/min)
4d
Gas type (LP or NG)
5d
Fan speed (Hz)
6d
Burner power (%)
7d
Maximum power (kW)
8d
Back flow temperature (ºC)
9d
Exhaust temperature (ºC)
1)
1F
Most recent error/failure
2F
2nd most recent error
Table 14
+
+
+
3F
3rd most recent error
4F
4th most recent error
5F
5th most recent error
6F
6th most recent error
7F
7th most recent error
8F
8th most recent error
9F
9th most recent error
10F
10th most recent error
H0
Numbers of hours - mode 0
H1
Numbers of hours - mode 1
H2
Numbers of hours - mode 2
1) Only available condensing models
Working hours
Number in H0
______
_
Number in H1
______ (X 100) =
_
Number in H2
______ (X 10 000) =
_
(H0 + H1 + H2) = Total of hours
__________
Table 15
After installing the appliance, the minimum
power fan speed must be adjusted to
compensate for variation in vent pipe length.
Diagnostic menu
Table 14