Lynx Model LX-85A
40
ERROR CODE
INDICATION
REMEDY
30
Excess Flue Temperature
Check flue gas temperature, at the maximum firing rate
and high water temperature. If the flue gas temperature
reaches 100°C (212°F), check the fuel input rate and
combustion. Check the condition of the heat exchanger. If
the flue gas temperature does not reach 100°C (212°F),
replace the flue sensor.
31
Low Water Cutoff Error
If a low water cutoff is installed, check the system water
pressure and content. Check the condition of the LWCO. If
no LWCO is installed, check the jumper is in place at the
wiring terminal board.
See Figure 16a on page 18.
32
Excess Water Inlet Temperature
Check that the wire harnesses to the water inlet and outlet
sensors are not reversed. The water inlet sensor harness
should have a blue colored connector, the water outlet
sensor harness should have a red colored connector.
Check that the pumping flow direction is correct.
51
Reset Button Error
Try turning power supply off and on again. If error returns,
replace the display board.
52
Boiler Model Selection Error
Check that the proper boiler model selection and
confirmation code is entered in the display.
See Table 5 on page 32.
continued from page 38
04
Domestic Hot Water Tank Sensor Open
If sensor is utilized, check wire harness connections going
to the sensor, or replace the sensor. If no sensor is utilized,
check the proper DHW mode is programmed.
See Table 5 on page 32.
14
Domestic Hot Water Tank Sensor Shorted
If sensor is utilized, replace the sensor. If no sensor is
utilized, check the proper DHW mode is programmed.
See Table 5 on page 32.
C. WARNING ERRORS:
Indicated by an
“H”
in the mode display. Operation of the space heating mode is not affected, and the
warning is displayed intermittently. Operation of the DHW mode is automatically restored, once the condition is fixed. The
temperature display shows the error code. Pressing the “reset” button is not required.
