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V
ERIFY PROPER OPERATION AFTER SERVICIN
G
VERIFY PROPER OPERATION AFTER SERVICING
Failure to adhere to these guide-
-
ELECTRICAL SHOCK HAZARD
. Internal wiring is still powered when
the switch is off.
DO NOT JUMPER DEVICES
Never jumper (bypass) any device except for mo-
mentary testing.
REINSTALL Jacket door
The boiler jacket door must be securely fastened to
the boiler to prevent boiler from drawing air from
inside the boiler room. This is particularly important
if the boiler is located in the same room as other ap-
pliances. Failure to keep the jacket door securely fas-
tened could result in severe personal injury or death.
BEFORE SERVICING or
MAKING CONNECTIONS —
LABEL WIRES BEFORE
REMOVING
Label all wires prior to disconnection
when servicing controls. Wiring errors
can cause improper and dangerous
operation.
Before calling for troubleshooting assistance, fill in the
“
” (page 136).
Record the boiler size and CP number (located on the
left side exterior of the boiler jacket).
Part number 550-100-325/0419
89
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
37 Troubleshooting
Tool
Multiple uses
Remove heat exchanger cover plate
Remove burner screws
For gas valve Offset Lowfire adjustment
For gas valve Highfire adjustment
Measurements on sensors and electrical components
Measures the INLET gas pressure to the boiler
Combustion testing and boiler adjustments
Checking surface temperatures of heat exchanger and
pipes
Check the following:
1. Make sure thermostat is calling for heat and contacts (including
appropriate zone controls) are closed. Make sure all external limit
controls are either installed (and closed) or temporarily jumpered
for testing.
2. Make sure that connectors to control are securely plugged in at
module and originating control.
3. Gas pressures:
Maximum: 13” w.c. with no flow (gas valve lockup pressure).
Minimum: 3.5” w.c. minimum values given on page 14 while
operating on high fire.
BEF
O
RE TR
OU
BLE
S
H
OO
TIN
G
—
BEFORE TROUBLESHOOTING —
1. Check for 120VAC (minimum 102 VAC to maximum 132 VAC)
to boiler.
2. Check the control for error codes.
3. See Figure 80, page 62 for navigation instructions and the pages
following for the display key identification.
Hold reset button for 20 seconds:
TS Flashing (parameter)
Push heating – button
IN flashing (information)
Push heating – button
HI flashing (history/fault)
Push “Reset” once
Push + to scroll error codes, refer to error code list Table 3,
page 92.
To exit out, hold reset button for 20 seconds.
Figure 113
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