Error Conditions; Service Condition - A.O. Smith SGS - 100 Installation & Service Manual

8
2. The current time falls outside a set time period
of the week program.
The figure shows the display with the following
information:
- line one: the text PROG;
- line two: the time, the day and T
alternately (9.3 "The appliance's heating
cycle");
- line three: the next scheduled switch-on
time;
- line four: displays the text
PERIOD ACTIVATED.
In all modes, the temperature may at any moment
drop below the desired temperature. The appliance
then enters a heating cycle. This heating cycle is
identical (9.3 "The appliance's heating cycle")
basic operating modes.
Note
Setting and if necessary programming of the basic
operating modes are described in the main
menu (11 "Main menu") chapter.
8.4

Error conditions

The figure shows an example of an error condition. If
the appliance enters this condition, the display will
show the following information:
• line one: error code comprising a letter and two
digits, followed by the error description;
• lines two to four: alternately, a brief explanation of
the error, and a brief action to resolve the error.
S04: SENSOR ERROR
CHECK
SENSOR OR DUMMY
Caution
The displayed action to resolve the error may only
be performed by a service and maintenance engineer.
There are various types of errors:
• LOCK OUT ERRORS
When the cause has been removed, these errors
require a reset with the button
appliance can resume operation.
• BLOCKING ERRORS
These errors disappear automatically once the
cause of the error has been removed, after which
the appliance resumes operation by itself.
The display does not show what type of error has been
detected. A comprehensive overview of the errors is
provided elsewhere in the
manual (13 "Troubleshooting").
58
Status of the appliance
If, as end-user, you find the appliance in an error
condition, you may attempt to restart the appliance by
pressing the
However, if the error returns or occurs several times in
a short time you must contact your service and
maintenance engineer.
and T
1 net
8.5
The figure shows the message
!!!
MAX. BURNING HOURS:
SERVICE REQUIRED.Should this message appear,
then the appliance is in need of a service and
for all
maintenance inspection. In that case, contact your
service and maintenance engineer.
the number of expired burning hours and the preset
service interval. Should the service interval have been
incorrectly selected, contact the service and
maintenance engineer for instructions on how to
adjust this. Information on the maintenance frequency
is provided elsewhere in the
manual
before the
button

Service condition

WARNING !!!
SERVICE REQUIRED
Note
The message SERVICE REQUIREDis based on
(14 "Maintenance frequency").
Instruction manual SGS
gis