Table of Contents
Advertisement
Error
Code Meaning
4
Low Flame Signal
Pilot Flame detected when no
6
flame should be present
18
Internal electronics failure
Flame sensed during 1.7s pre-
23
purge (before pilot valve opened)
Boiler water temperature sensor
32
failure
35
Duplicate Zone
Damper failed to open after 60s
55
57
Grounded pilot electrode
AC Power Frequency Error
58
Line voltage error
59
(Supply voltage too high or low)
Thermostat input higher than
60
threshold
61
Line Voltage Unstable
63
Maximum recycles exceeded
64
Internal failure
EnviraCom communication lost
89
TABLE 13.0 - ERROR CODES
Possible Cause
•
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
•
Defective gas valve
•
High gas pressure
•
Defective control
•
Possible internal problem with boiler control. Cycle power to the boiler and
replace control if problem persists.
•
Defective gas valve
•
High gas pressure
•
Defective control
•
Loose sensor connection at control
•
Defective Sensor
•
Defective control
Error code reserved for future use
•
Loose or defective damper harness
•
Obstruction in path of damper blade
•
Defective damper
•
Defective control
•
Condensate or foreign material is shorting pilot electrode to ground.
•
Ignition cable insulation is damaged and touching ground.
•
Pilot is damaged
•
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
•
Power supply voltage is incorrect (should be 120VAC nominal)
•
Defective or incorrect 24VAC transformer
•
Loose 120VAC connection or 24VAC connection between transformer and
control
•
External voltage is applied to thermostat connections (most common cause is
external transformer in old thermostat wiring.
•
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.
•
See Error Code 4 above (boiler lost proof of pilot 6 times in a row)
•
Loose or defective damper harness
•
Obstruction in path of damper blade
•
Defective damper
•
Improper pilot operation
•
If problem persists, replace control
Communication lost between boiler control and certain Crown control options.
Consult Crown control option manual.
39
Hide quick links:
Advertisement
Table of Contents
