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Lynx Model LX-85A
Increasing the blower rpm will increase the fuel input
rate, and decreasing the blower rpm will decrease
the fuel input rate.
F. Exit the "System Test" mode, once the combustion and
fuel input rate has been checked and adjusted, if
necessary. (Refer to Table 5 on page 32.)
G. Replace the heat exchanger enclosure front cover, and
secure the 2 latches. Lower the control panel back in
place, and secure with the 2 screws. Replace the jacket
top panel, and secure with the 2 screws. Replace the
jacket front panel, engaging the top area clips to secure.
V. SAFETY CHECK
A. Check for gas leaks:
Using soap solution, check for gas leaks from meter to
gas valve including all pipes and fittings and gas valve
connections. Use liquid soap solution for all gas testing.
DO NOT use open flame.
A. LOCKOUT ERRORS: Indicated by an "A" in the mode display. The reset button must be pressed to clear the error and retry
operation. The temperature display shows the error code.
ERROR CODE
01
02
03
04, 05, 09, 10,
12, 13, 14, 15,
16, 18, 32
19, 20
33
INDICATION
Ignition Failure - 3 unsuccessful
ignition attempts in a row.
Flame Failure - 3 losses of flame
signal during one demand.
Water High Limit Open
Control Failure
Flame Detected at Wrong Time
Fan Failure - RPM error
B. Thermostat Test:
Set thermostat setting to low enough to end call for heat.
Gas valve should close and burner should stop firing.
Blower and circulator pump should go into a post purge,
then shut off.
C. Control Safety Shutdown test:
With the burner firing, disconnect the spark cable from the
spark ignitor. Gas valve should close and burner should
stop firing. The boiler will try for ignition three times after
this, then should lock out with an "A 01" error shown on
the display. Reconnect the spark cable to the spark
ignitor, and press the "Reset" button to return to normal
operation.
VI. DIAGNOSTIC ERROR CODES
WARNING: Only a trained, experienced service
technician should perform troubleshooting. Turn off all
electric power to the boiler before service.
Check for steady sparking at electrodes. If spark not steady -
check spark gap to be .03mm (.125"), clean or replace spark
ignitor, check power supply voltage and grounding. If spark is
steady - check for proper gas supply pressure. Check
combustion, if able to ignite, or replace gas valve.
Check for proper combustion, at both max. and min. input firing
rates. If combustion is within the range specified in Table 6 on
page 36, clean or replace spark ignitor, check power supply
voltage and grounding.
Check to see if the water outlet temperature reaches 104°C
(220°F). If it does, replace the water outlet 12k ohm sensor. If it
does not, replace the water high limit switch.
Replace control board. Make sure the proper boiler model
selection and confirmation code is entered.
See Table 5 on page 32.
If a flame is still observed after a call for heat is stopped, replace
the gas valve. If the burner seems to be shutting down properly,
replace the spark ignitor.
Check wire harness connections going to the blower. Replace
REMEDY
blower.
38
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