Error Conditions - A.O. Smith 28 30 50 60 Installation & Service Manual

6
PROG
10:00 Monday 76ÉC
MO 11:15 Tset 75ÉC
Figure 6.4 week program
active, current time within
programmed period
PROG
12:00 Monday 76ÉC
MO 11:15
PERIOD ACTIVATED
Figure 6.5 week program
active, current time outside
programmed period
6.3

Error conditions

S04: SENSOR ERROR
CHECK
SENSOR OR DUMMY
Figure 6.6 Example of an error
message
46
Status of the appliance
1) The current time falls within a set time period of the week program.
Figure 6.4 shows the display in this situation:
- line one: the text
PROG
- line two: the time, the day and alternately T
2.3;
- line three: the next scheduled switch-off time and the water
temperature T of the active period;
set
- line four: is empty, or depending on the heating cycle, a text such as
. See paragraph
HEAT DEMAND
2) The current time falls outside a set time period of the week program.
Figure 6.5 shows the display in this situation:
- line one: the text
PROG
- line two: the time, the day and alternately T
2.3;
- line three: the next scheduled switch-on time;
- line four: 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
the same for all basic operating modes. See paragraph
heating cycle'.
n
Remark
Setting and programming of the basic operating modes are described in
chapter '8 Main menu'.
Figure 6.6 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 through four: alternately, a brief explanation of the error, and a brief
action to resolve the error.
c
Note
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 is no longer present, these errors require a reset with the
R button, before the appliance can resume running.
• BLOCKING ERRORS
These errors disappear automatically once the cause of the error has been
removed, after which the appliance resumes by itself.
The display does not show what type of error has been detected. For a detailed
overview of error conditions, please refer to chapter
If, as end-user, you find the appliance in an error condition, you may attempt to
re-start the appliance by pressing the R button once.
However, should the error return or become persistent, you should contact your
service and maintenance engineer.
gis
;
and T
1
'7.4 The appliance's heating cycle'
;
and T
1
.
'7.4 The appliance's
'10 Troubleshooting'.
Instruction Manual BFC
. See paragraph
net
. See paragraph
net