Explanations Of Symbols And Signs On The Control Tower Display - A.O. Smith Epsilon EB-40 Installation And Service Manual

Explanations of symbols and signs on the Control Tower display.

Central heating
Domestic hot water (DHW)
Pump program on / off
Mode key
From Good-read out to Technical read out (and vice versa):
- Press 5 sec. on the STEP key.
Water pressure is to low (<0,7 bar), FILL
indication remains continuously visible,
the boiler is taken out of operation. The
installation needs to be topped up.
2
display
on / off
on / off
Selecting chapters
Water pressure is to low (<1,0 bar), fla-
shing FILL will alternate with indication
of water pressure, boiler power of 50%
is possible. The installation needs to be
topped up.
Operation indication
(in the first display position by technical read out)
Last postion shows the actual flow temperature
No heat requirement
0
Ventilation phase
1
Ignition phase
2
Burner active on central heating
3
Burner active on hot water
4
Fan check
5
Burner off when room thermostat is demanding
6
Pump overrun phase for central heating
7
Pump overrun phase for hot water
8
Burner off because of to high flow water temperature
9
Automatic venting program
A
Step key Selecting chapters
Reset key
Unlocking the boiler
in case of error
Water pressure is to high (>2,8 bar), if
HIGH indication remains continuously vi-
sible, the boiler is taken out of operation.
The installation pressure needs to be
decreased by draining water.