A.O. Smith SGS - 100, Installation, User And Service Manual

Page: 68 / 121

Instruction manual SGS 65
gis
8 Status of the water
heater
8.1 Introduction
This chapter covers the following topics:
•
Operating modes;
• Error conditions;
• Service condition;
• Anode warning;
• Q/T Sensor warning;
• Collector temperature warning
8.2 Operating modes
When running, the water heater has four basic
operating modes, namely:
•
OFF
•
ON
•
EXTRA
•
PROG
8.2.1
OFF
In this mode, the frost protection is activated. The
figure shows the display with the following information:
•
line one: the text
OFF
;
• line two: the time, the day and T
1
. (9.3 "The
appliance's heating cycle")
• lines three and four: the text
FROST PROTECTION ACTIVATED
.
8.2.2
ON
In this mode, the water heater continually responds to
the hot water demand. The figure shows the display
with the following information:
•
line one: the text
ON
;
• line two: the time, the day and T
1
. (9.3 "The
appliance's heating cycle")
• line three: the programmed water temperature
T
set
;
• line four: is empty when the water heater is idle, or
depending on the operating cycle (9.3 "The
appliance's heating cycle"), displays a text such as
HEAT DEMAND
.
8.2.3
EXTRA
In this mode, one extra period is programmed and
activated. In this mode, the
OFF
or
PROG
mode is
temporarily overruled to fulfil a single period of
demand. When the period has passed, the water
heater automatically returns to the previous operating
mode. The figure shows the display with the following
information:
•
line one: the text
EXTRA
;
• line two: the time, the day and T
1
; (9.3 "The
appliance's heating cycle")
• line three: the switch-on time and the related water
temperature setting;
• line four: the text
PERIOD ACTIVATED
.
OFF
13:45 Thursday 6ÉC
FROST PROTECTION
ACTIVATED
ON
13:45 Thursday 67ÉC
Tset 75ÉC
EXTRA
12:30 Thursday 76ÉC
TH 12:45 Tset 75ÉC
PERIOD ACTIVATED