AERCO Esteem O&M Manual - Manual (Page 55)

49
Boiler Control Display
Boiler Control Display
S
TANDBY
M
ODE
This is the standard mode for the Esteem 399
Low NOx. The control automatically returns
to this mode after 20 minutes if no keys have
been pressed on the display. Any parameters
that were modified are then stored.
The first character on left side of display
shows the current status of the boiler depend-
ing on the condition of both the boiler and the
burner. The last 3 characters show the boiler
supply temperature.
If the burner is blocked due to a soft lockout,
the display alternates between a
9 followed
by the boiler supply temperature and a b
with a two digit error code. See “Chapter 19
Troubleshooting” on page 69 for more on error
codes
T
O TEMPORARILY PLACE THE BURNER INTO
HIGH FIRE TEST MODE
:
Press the MODE button until “ StbY ” is dis-
played. Then press and hold both the MODE
and “+” buttons simultaneously until the first
digit flashes
H
.
While in the test mode:
• high limit will function
• boiler space heating circulator will func-
tion
• domestic circulator will not function
• the test mode will time out in approxi-
mately 10 minutes
T
O TEMPORARILY PLACE THE BURNER INTO
LOW FIRE TEST MODE :
Press the MODE button until
StbY
is dis-
played. Then press and hold both MODE and
“-” buttons simultaneously until the first digit
flashes
L .
T O DEACTIVATE THE HIGH OR LOW FIRE TEST
MODE
:
Press the MODE button until StbY is dis-
played. Then press and hold both the “+” and
“-” buttons simultaneously to deactivate the
high or low fire test mode.
N
OTICE
If the “+” button is held in, the space
heating system (parameter 3) will be
turned OFF and the display will show
“ cOFF ”. Press and hold the “+” button
to turn the space heating system back
ON, the display will show “c” followed by
space heating set point. If the “-” button
is held in while in the “ StbY ” mode,
domestic system (parameter 2) will be
turned OFF and the display will show
“ dOFF ”. Press and hold “-” button to
turn the domestic system back ON, the
display will show
d followed by domes-
tic set point temperature.
GF-125