A.O. Smith TWI 35-200, Инструкция по установке, эксплуатации и обслуживанию

Страница: 75 / 92

Indication Cause Measure
CO
2
value is not
correct
The unit is not set for the correct gas
type - Make sure that the gas type
corresponds with the information on
the rating plate
- Make sure if the venturi restrictor has
the correct diameter, refer to Gas
details (see 13.3).
Contaminated venturi Remove any contamination from the venturi
inlet.
Leakage between venturi and venturi
connector - Make sure that the venturi connector
is not damaged.
If necessary replace the venturi
connector
- Make sure that the venturi connector
is correctly connected.
If necessary, tighten the clamp.
Recirculation of flue gases - Make sure that the CO
2
-value
measured in the flue gas outlet is
correct, refer to CO
2
value (see 8.9.4).
- Make sure that the CO
2
value
measured in the air inlet is below
0.5 vol%.
- If necessary, reconnect the venting
system and change the necessary
seals.
12.1.2 Displayed errors
Note
For the coding of the connections, refer to the Electrical wiring diagram.
Note
Contact your service and maintenance engineer if the error persists.
Note
Each error has a code and a description. The code has 7 characters: XXX-XXXX. When
the water heater has an error, the two digits before the dash (XXX-XXXX) are important
to pinpoint the error.
Code and
description Cause Measure
X47–XXXX
(blocking error)
Sensor error
Open circuit of
temperature sensor
Sensor is not (correctly) connected. - Make sure that the connector is
connected to J9.
- Make sure that the wire is connected
to the sensor.
Damaged wiring and/or defective sensor. Replace the wiring and/or the sensor.
X45-XXXX
(blocking error)
Sensor error
Short circuit of the
temperature sensor
Short circuit in the sensor circuit. Replace the wiring and/or the sensor.
n
0313279_TWISTER II_UKUK_
V1.1, 18-02-2019
75