Installation / Operation Instruction Manual

61
Troubleshooting
RTG-L-199/160N/X1 – 6 721 827 274 (2022/06)
• After installation, the appliance shows repeated
unresolved errors ( chapter 9).
• In Natural Gas installations where energy content is less
than 900 BTU/cu ft.
• After replacement of electronic control unit, fan or gas
valve.
Improper gas pressure will affect combustion.
▶ Please see chapter 4.14 for more information.
8.11.1 Automatic adjust of Gas/Air flow
▶ Press and hold simultaneously buttons , and
for 3 seconds.
▶ Press the buttons or to select UC (Combustion
Automatic Adjustment) menu.
▶ Press the button to enter UC menu.
Automatic adjustment will begin.
▶ Open hot water taps when the display shows Tap Symbol
image (1 tub and 2 sinks should be sufficient; when there is
enough water flow the image disappears).
Fig. 57 Combustion Auto Adjust - Open Taps
The Combustion Auto Adjust process takes several minutes.
Steps from 1 to 7 will appear on the display.
▶ Do not interfere with the appliance during the auto
adjustment process.
If the display shows “AD” during calibration process,
▶ Press button which will resume the calibration process
▶ Wait until display shows DN blinking as a sign of calibration
complete.
▶ Touch the symbol to exit UC menu.
Gas and Air auto adjustment is complete.
In case of failure in the auto calibration process the error sign
appears.
Verify if:
▶ Any error codes appear on the display. See table 30.
▶ Gas type and pressure are correct.
▶ Wind conditions are stable (e.g. wind gusts may be a cause
of failure).
▶ Hot water flow is sufficient and stable (e.g. water from a
well is a potential source of water instability).
In case of positive results for all these actions:
▶ Exit UC menu and repeat the process.
If failure persists:
▶ Perform manual adjustment according to chapter 8.11.2
or contact Bradford White support line for further
assistance.
8.11.2 Manual adjust Gas/Air flow
Gas/Air flow adjustment is also possible to perform manually
(only recommended if automatic adjustment can not conclude
successfully).
First step - Adjust the maximum power (P1)
▶ Press the button to turn ON.
▶ Press and hold simultaneously buttons , and
for 3 seconds, until display reads P4.
Fig. 58
▶ Press the buttons or to select P1 (Maximum
Power) menu.
▶ Open hot water faucets when the display shows Tap
Symbol image (1 tub and 2 sinks should be sufficient;
when there is enough water flow the image disappears).
▶ Press to enter P1 adjustment.
Display shows E.
▶ Press or until L1 appears.
▶ Press the button to enter L1.
Display shows L1 value.