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1. See Figure 100 for tools and kits recommended for troubleshooting
ECO
Tec boilers.
2. Check for 120VAC (minimum 102VAC to maximum 132VAC)
to boiler.
3. Check the control’s last six (6) lockout histories. (Navigate to the
DIAGNOSTICS menus.)
a. See Figure 80, page 87 for HOMEOWNER NAVIGATION
instructions and Figure 88, page 94 for the complete Diagnostics
menus.
b. In the DIAGNOSTICS menu, select FAULT HISTORY and
press the right arrow.
c. Record the fault counts, (Ignition Retries, Manual Reset Count,
Auto Reset Count).
d. Follow information at the bottom of the screen to navigate
through your lockout histories.
Tools and kits needed for troubleshooting
#2 Phillips screwdriver
Multiple uses
2.5 & 4mm Allen wrench
To adjust gas valve settings
3mm Allen wrench
For removing ignition electrode screws
8mm wrench
To remove blower
10mm wrench
To remove heat exchanger cover plate
T20 long-handled Torx
driver
To remove burner screws and mixer/venturi
Large crescent wrench
To remove gas valve
Multimeter
Measurements on sensors and electrical components
Manometer
(Inclined or digital)
Measure the INLET gas pressure to the boiler
Combustion analyzer
(Digital preferred)
Combustion testing and boiler adjustments
Contact thermometer
Checking surface temperatures of heat exchanger
and pipes
Maintenance kit
ALWAYS have this kit on hand when performing
maintenance in case replacement is required.
Check the following:
1. Make sure thermostat is calling for heat and contacts (including
appropriate zone controls) are closed. Check for 24VAC between
thermostat wire nuts and ground.
2. Make sure all external limit controls are either installed (and closed)
or temporarily jumpered for testing.
3. Make sure that connectors to the control are securely plugged in
at module and originating control.
4. Gas pressures:
Maximum: 14" (355 mm) w.c. with no fl ow (gas valve lockup
pressure).
Minimum: must be no less than the minimum values given on
page 19 while operating on high fi re.
Before calling for troubleshooting assistance, fi ll in the
“ECO
Tec” (starting on
page 152 ). Record the boiler size and Consumer Protection
(CP) number (located on the right side exterior of the
boiler jacket).
Part number 550-100-260/0520
114
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
ELECTRICAL SHOCK HAZARD
.
DO NOT JUMPER DEVICES
Never jumper (bypass) any device except for
momentary 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
appliances. Failure to keep the jacket door securely
fastened 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.
Troubleshooting
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