Installation / Operation Instruction Manual

52
Problem solving
RTG-K-199/160N/X2 – 6 720 813 642 (2022/06)
AA
3)
Condensing unit flue gases temperature [16]
above 392 °F (200 °C) and/or flue gases
temperature [15] above 145 °F (63 °C) at the
exhaust sensor [15]. Appliance regulates power to
protect against overheating.
▶ Check flue gas temperature sensor.
▶ Check water inlet temperature sensor.
▶ Descale appliance ( section 7.3).
1)
AD Flue blockage detected during startup due to
insufficient combustion air. Appliance power
derate and possible reduce of comfort level.
▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Check air openings and exhaust opening for
obstructions and reset the error.
▶ Check if the air filter is dirty or clogged, replace it
if needed.
▶ Perform gas and air tuning ( section 8.11).
1)
BB Fan calibration triggered due to missed ignitions. ▶ Check gas inlet pressure ( section 4.17).
1)
▶ Perform gas and air tuning ( section 8.11).
1)
BC Successive fan calibration with similar learned
values.
▶ Check gas inlet pressure ( section 4.17).
1)
▶ Perform gas and air tuning ( section 8.11).
1)
C1
4)
C2
3)
Excessive flue blockage detected during startup
due to insufficient combustion air.
Appliance shuts down for safety.
▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Check air openings and exhaust opening for
obstructions and reset the error.
▶ Check if the air filter is dirty or clogged, replace it
if needed.
▶ Perform gas and air tuning ( section 8.11).
1)
▶ Contact Bradford White support line for additional
information and assistance in case of installation
in dusty areas.
C3 Flow sensor [14] does not detect water
recirculation.
▶ Check pump and connections.
1)
▶ Check recirculation circuit for any blockage.
C5 Bypass water valve [8] disconnected or damaged. ▶ Check bypass water valve wire connections.
1)
If the problem persists:
▶ Replace the bypass water valve and/or wire
connections.
1)
C7 Fan [2] disconnected or damaged. ▶ Check fan wire connections.
▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Replace the fan and/or wire connections.
1)
C8 Main water valve [22] disconnected or damaged. ▶ Check main water valve wire connections.
1)
If the problem persists:
▶ Replace main water valve and/or wire
connections.
1)
C9 Barometric pressure sensor damaged. ▶ Reset error (press and hold on/off button for 3
seconds).
If the problem persists:
▶ Replace electronic control unit (ECU).
1)
Display Description Solution