Installation / Operation Instruction Manual

68
Problem solving
RTG-L-199/160N/X1 – 6 721 827 274 (2022/06)
Table 30
Note: If the appliance is locked for safety reasons, information is shown on the display to give more information on the problem. Once
the problem is solved, you may have to reset the error (press and hold button for 3 seconds). To restart the appliance, inside
the appliance or in the remote control.
F2
F3
F7
F8
Electronic control unit internal error. ▶ Reset error (press and hold on/off button for 3
seconds).
If appliance’s configuration is required:
▶ See section 6.5 to configure appliance (region,
power, type and gas type) and perform an
automatic combustion adjustment according to
the section 8.11.
▶ Replace electronic control unit.
1)
F9 Gas valve driver internal fault. ▶ Check gas valve wire connections.
1)
If the problem persists:
▶ Replace the wire connections and/or electronic
control unit.
1)
FA Gas leakage in the gas path (gas valve or gas manifold
shut-off valves).
▶ Replace the gas valve and/or gas manifold.
1)
▶ After gas valve and/or gas manifold replacement
perform gas and air tuning ( section 8.11).
1)
FC Control buttons pressed for more than 30s. ▶ Release the button.
Display show
but without
existence of solar
thermal system.
Power demand lower than appliance minimum output
power.
▶ Increase the hot water flow.
▶ increase the setpoint temperature.
Display show
and water
temperature low.
Display shows “--” Display is not communicating with Electronic Control
Unit.
▶ Reset the appliance by unplugging it for some
seconds (at least 10) and plug it back in.
▶ Replace the display and/or wire connections
and/or electronic control unit.
High pitch noise
(whistling)
Combustion flame with gas in excess or lack of air. ▶ Check if gas type is correct ( section 6.7).
1)
▶ Check gas inlet pressure ( section 4.14).
1)
▶ Perform gas and air tuning ( section 8.11).
1)
Low pitch noise with
vibration (rumbling)
Combustion flame with air in excess or lack of gas. ▶ Check if gas type is correct ( section 6.7).
1)
▶ Check gas inlet pressure ( section 4.14).
1)
▶ Perform gas and air tuning ( section 8.11).
1)
1) Only to be carried out by qualified contractors.
2) see temperature resistance charts in fig. 63 and 64.
3) Reset error by closing and opening all water tap, no restriction.
4) Reset error by closing and opening all hot water faucet, limited to 3 times per hour. It can take up to 3 minutes to check for
blockage and the appliance to perform the automatic air tuning.
Display Description Solution