A.O. Smith BFC-28 - Troubleshooting Errors and Warnings

Instruction manual BFC 73
gis
13 Errors
13.1 Introduction
A distinction is made between:
• General errors
General errors are not reported on the display. General errors are:
- Gas smell
- Display does not light up
- Insufficient or no hot water.
- Water leakage
- Explosive ignition.
The manual includes (13.2 "
Troubleshooting table for general errors") a
table with general errors.
• Displayed errors
Errors are reported on the display as follows:
- Line one: an error code and a brief description. The code consists of a
letter and two digits.
- Lines two, three and four: a long description, alternating with a
recommended action. See the figures. The first shows a possible
error, the second shows the appropriate checking action.
There are various types of errors, all falling into one of two groups:
- LOCK OUT ERRORS
When the cause has been removed, these errors require a reset with
the button, before the water heater can resume operation.
- BLOCKING ERRORS
These errors disappear automatically once the cause of the error has
been removed, after which the water heater resumes operation by
itself.
The manual includes (13.3 "
Troubleshooting table for displayed errors") a
table of error messages that can appear on the display.
• Warnings on the display
The warnings (13.4 "
Warnings on the display") apply to the water heater.
S02: SENSOR ERROR
TOP TANK
SENSOR 1
NOT CONNECTED
S02: SENSOR ERROR
CHECK TOP TANK
SENSOR