Status Of The Appliance; Introduction; Operating Modes - A.O. Smith GWV - 120 Installation And Service Manual

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8
8.1

Introduction

Topics covered in this chapter, in sequence:
•

Operating modes

• Error conditions
• Service condition
• Warning
8.2 Operating modes
When running, the appliance has four basic operating
modes, namely:
•
OFF
•
ON
•
PROG
•
EXTRA
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
• lines three and four: the text
FROST PROTECTION ACTIVATED.
OFF
13:45 Thursday 6ÉC
FROST PROTECTION
ACTIVATED
8.2.2
ON
In this mode, the appliance 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
alternately (2.3 "The appliance's heating
• line three: the programmed water temperature
T ;
set
• line four: is empty when the appliance is idle, or
depending on the heating cycle
appliance's heating cycle"), displays a text such as
HEAT DEMAND.
ON
13:45 Thursday 67ÉC
Tset 75ÉC
Instruction manual GWV
Status of the
appliance
8.2.3
In this mode a preset week program is active, and the
appliance responds continually to demand within the
time periods set in the week program. There are two
distinct situations possible in this mode:
PROG
10:00 Monday
MO 11:15
1. The current time falls within a set time period
3
PROG
12:00 Monday
MO 11:15
PERIOD ACTIVATED
2. The current time falls outside a set time period
and T
1 3
cycle").
(2.3 "The
PROG
76ÉC
Tset 75ÉC
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 (2.3 "The appliance's heating
cycle");
- line three: the next scheduled switch-off time
and the water temperature
period;
- line four: is empty when the appliance is idle,
or depending on the heating cycle
appliance's heating cycle"), displays a text
such as HEAT DEMAND.
76ÉC
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 (2.3 "The appliance's heating
cycle");
- line three: the next scheduled switch-on
time;
- line four: displays the text
PERIOD ACTIVATED.
and T
1 3
of the active
Tset
(2.3 "The
3
53