Troubleshooting; Errors And Warnings; General Errors - A.O. Smith Innovo IR 12-160 Installation, User And Service Manual

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12.1
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12.1.1
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Indication
Gas smell
The display is off
0312266_INNOVO_UKUK_V5.1, 2022-07-12

Troubleshooting

Errors and warnings

The water heater can have three different kinds of errors and warnings:
• General errors (see 12.1.1), which are not displayed
• Displayed errors (see 12.1.2), which are divided in two different groups:
- Lock out errors: when the cause is removed, you can reset the error to resume
operation. The displayed code and the back-light of the display blink.
- Blocking errors: when the cause is removed, the error resets automatically to
resume operation. The code is displayed continuously and the back-light of the
display blinks.
• Displayed warnings (see 12.1.3)
Note
It is possible to view the error history of the water heater, refer to Error history (see
10.4).

General errors

Note
For the coding of the connections, refer to the Electrical wiring diagram (see 13.4).
Cause
There is a gas leak
The water heater is off.
There is no supply voltage.
Defective fuse(s)
Measure
- Close the mains gas valve at once.
- Do not operate any switches.
- No naked flames.
- Ventilate the boiler room.
- Immediately contact your installation
engineer or your local gas company.
Turn on the water heater (see 4.2).
Make sure that:
- the control switch is set to I.
- the isolator is in ON position.
- there is power on the isolator.
- there is power to the electrical
connector block.
The measured voltage must be
230 V (-15%, +10%).
AC
Replace the fuse(s).
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