Crown Aruba 5 Installation Manual
39
TABLE 13.0 - ERROR CODES
Error
Code Meaning Possible Cause
4
Low Flame Signal
• Low gas pressure at gas valve inlet
• Partially plugged pilot tubing or pilot orice
• 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
ame 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 1.7s pre-
purge (before pilot valve opened)
• Defective gas valve
• High gas pressure
• Defective control
32
Boiler water temperature sensor
failure
• Loose sensor connection at control
• Defective Sensor
• Defective control
35
Duplicate Zone
Error code reserved for future use
55
Damper failed to open after 60s
• Loose or defective damper harness
• Obstruction in path of damper blade
• Defective damper
• Defective control
56
Power at end of limit string when
it shouldn’t be.
• Control, vent damper, or damper harness is defective. With Error 56 present, and no
call for heat, unplug damper harness from control and check for 24VAC between ter-
minal P6-5 on control (see Figure 9.2 for location) and ground. If voltage is present,
replace control. If not, inspect the damper harness for shorts or miswired connections.
If no harness defect is found, replace vent damper.
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 o, 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
• Loose or defective damper harness
• Obstruction in path of damper blade
• Defective damper
• Improper pilot operation
• If problem persists, replace control
89
EnviraCom communication lost
Communication lost between boiler control and certain Crown control options. Consult
Crown control option manual.