Install Instructions

50
109837-01 - 5/20
PVCG-C
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)