50
109838-01 - 5/20
X-PV
Installation, Operating & Service Manual
Table 13.0: Error Codes
Error
Code Meaning
Possible Cause
2
Pressure Switch failed to open
•
Jumped air pressure switch
•
Condensate in air pressure switch or switch tubing
•
Defective air pressure switch
4
Low Flame Signal
•
Low gas pressure at gas valve inlet
•
Partially plugged pilot tubing or pilot orifice
•
Loose connection in ignition cable or ground wiring
•
Dirty pilot electrode/ground strap
•
Pilot electrode porcelain cracked
•
Damaged pilot hood/ assembly
•
Defective control
6
Pilot Flame detected when no
flame should be present
•
Defective gas valve
•
High gas pressure
•
Defective control
18
Internal electronics failure
•
Possible internal problem with boiler control. Cycle power to the boiler and
replace control if problem persists.
23
Flame sensed during 30s pre-
purge (before pilot valve opened)
•
Defective gas valve
•
High gas pressure
•
Defective control
29
Air pressure switch failed to close
•
Vent system blockage
•
Vent system not constructed in accordance with installation manual (excessive
length, undersized pipe, wrong terminal, etc)
•
Condensate or leakage in air pressure switch tubing
•
Winds in excess of 40mph
32
Boiler water temperature sensor
failure
•
Loose sensor connection at control
•
Defective Sensor
•
Defective control
35
Duplicate Zone
Error code reserved for future use
57
Grounded pilot electrode
•
Condensate or foreign material is shorting pilot electrode to ground.
•
Ignition cable insulation is damaged and touching ground.
•
Pilot is damaged
58
AC Power Frequency Error
•
120VAC power supply frequency is incorrect (Should be 60Hz)
•
120VAC power supply is dirty (consult electrician and/or Utility)
•
Boiler water temperature sensor common (center wire) is damaged and
shorted to ground
59
Line voltage error
(Supply voltage too high or low)
•
Power supply voltage is incorrect (should be 120VAC nominal)
•
Defective or incorrect 24VAC transformer
•
Loose 120VAC connection or 24VAC connection between transformer and
control
60
Thermostat input higher than
threshold
•
External voltage is applied to thermostat connections (most common cause is
external transformer in old thermostat wiring.
61
Line Voltage Unstable
•
120VAC power supply is dirty (consult electrician and/or Utility)
•
Loose 120VAC connection or 24VAC connection between transformer and
control
•
Large electrical loads elsewhere on the installation are switching on and off,
causing incoming voltage to swing excessively at boiler.
63
Maximum recycles exceeded
•
See Error Code 4 above (boiler lost proof of pilot 6 times in a row)
64
Internal failure
•
Improper pilot operation
•
If problem persists, replace control
89
EnviraCom communication lost
Should not be observed on this boiler.
13
Troubleshooting
(continued)