Control Board Diagnostics - Bosch Therm C 1210 ES Installation And Operating Instructions Manual

Maintenance and service
7.7

Control board diagnostics

1. Push power button
2. Push and hold the
P
3. Turn power back on by pushing the power button
4. Continue to hold the
screen light up and the temperature reads 188 °C.
5. When display reads 188, immediately release the
button.
The display should now read P2.
6. Press to enter P2 adjustment. The current setting will
P
appear on the display. If not, repeat process.
7. Press and release the
the display reads 'P4'. You are now in the diagnostic mode
of the control board.
8. When the display reads 'P4', press and release the
button once again and the display should read 'E'.
+
9. Use the and
through different diagnostic modes available.
10. Once in the selected diagnostic mode of your choice, press
and release the button to display the diagnostic
P
information.
EXAMPLE: to read the flow rate in gallons 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 gallons/minute.
11. Once the information is obtained, press the
again to return to the diagnostic mode menu and scroll to
addition diagnostic information.
12. Press ON/OFF button to turn OFF the appliance and back
ON again to return heater to normal function.
Diagnostic menu
E Entry/Exit into sub-modes
0d Heat exchanger water temperature
1d Inlet water temperature (°F)
2d Outlet water temperature (°F)
3d Water flow (gallons/min)
4d Bypass control monitor (°F) [0d - 2d]
5d Fan speed (Hz)
6d Burner power (%)
7d Maximum power (kW)
8d Back flow temperature (°C)
9d Exhaust temperature (°C)
1F Most recent error/failure
2F 2nd most recent error
3F 3rd most recent error
56
to shut the water heater off.
button.
button until all symbols on the
P
P button on the control panel until
button on the control board to cycle
P
Diagnostic menu
4F 4th most recent error
5F 5th most recent error
.
6F 6th most recent error
7F 7th most recent error
P
8F 8th most recent error
9F 9th most recent error
10F 10th most recent error
1P* Appliance type - Cd (Condensing)
Appliance type - nC (Non condensing)
2P* Appliance power - 210/ 225 (kBTU)
+
3P* Temperature range - H (100-140°F)
Temperature range - C (100-180°F)
H0 Numbers of hours - mode 0
H1 Numbers of hours - mode 1
H2 Numbers of hours - mode 2
C0 Number of cycles - mode 0
P
C1 Number of cycles - mode 1
C2 Number of cycles - mode 2
button
Table 36 * Settings define from factory
7.7.1 Working hours
To see how many hours the appliance has worked, please enter
the "Diagnostic menu" (chapter 7.7);
▶ 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;
Working hours
Number in H0
Number in H1
Number in H2
(H0 + H1 + H2) = Total of hours
Table 37
______
______ (X 100) =
______ (X 10 000) =
C 1210ES/ESC – 6 720 644 887 (2022/04)
_______ +
_______ +
_______
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