44
X. TROUBLESHOOTING (continued)
IQ Boiler Control Error Codes (when
"
Err
"
is flashing)
Display
Status
Boiler / Control Action(s)
Blank
Boiler and Circulator off No 120 Vac power at boiler, check breaker and wiring between breaker panel and boiler.
Err
2
Pressure Switch Failed
to Open
While the blower is “off” the pressure switch failed to open (contact stuck closed).
- Check wiring
- Kinked or blocked pressure switch tubing
- Defective pressure switch
Err
4
Flame Current Lower
than Threshold
Check pilot assembly. Refer to Troubleshooting Section, 6
Err
6
Flame Sensed Out of
Normal Sequence
Flame sensed out of normal sequence (before opening gas valve or after closing gas
valve). Check gas valve operation.
Err
18
Electronics Failure
Cycle power to control. Replace control if problem persists.
Err
23
Flame Sensed During
Pre-Purge
Flame sensed during post-purge (before gas valve signaled open). Check the gas valve
for proper operation. Replace gas valve is problem persists..
Err
29
Pressure Switch Failed
to Close
While the blower is “on” the pressure switch failed to close.
- Connect manometer to pressure switch. Is differential pressure greater than minimum,
replace pressure switch.
- Check if tubing is securely connected to canopy
- Check if tubing is free of cracks or holes or condensate
- Check for blockage in vent/air intake system
- Vent system not installed in accordance with installation manual
- Wind at horizontal vent terminal in excess of 40 mph
- Replace blower
Err
32
Temperature Sensor
Failure
Temperature sensor or interface failure (open or short connection, increased connection
resistance, dual sensor mismatch) or control hardware failure.
Err
35
Duplicate Zone Alarm
Refer to IQ Zone Panel Instructions.
Err
57
Flame Rod Shorted to
Burner Ground
Flame Rod shorted to burner ground, this can result from excessive flue gas
condensation.
- Check for excessive condensate, dry pilot. Adjust setpoint higher.
- Check for loose or damaged ignition wire.
Err
58
AC Line Frequency Error AC Signal is too noisy or frequency is incorrect. Check supply voltage.
Err 59
Line Voltage Error
AC voltage out of specification high or low. Check supply voltage.
Err
60
Thermostat Input Higher
than Threshold
Check thermostat wiring.
Err
61
Line Voltage Unstable
Possibly too many heavy loads switching on and off cause erratic supply voltage. Check
supply voltage.
Err
63
Soft Lockout - Maximum
Recycles Exceeded
Maximum number of recycles exceeded. Refer to Troubleshooting Section, 5.
Err
64
Soft Lockout - Internal
Failure
The electronics has detected an error. This can be caused by an actual controller internal
fault or wiring fault:
- Check pilot assembly,
- If problem persists, replace the control.
Err
89
Communication Lost
Check wiring between control and IQ Zone Panel or IQ Reset Card.
Use Control Display
ERR
(error) Number To Direct TroubleShooting Efforts
If the control detects an error
it will flash “
Err
” (error) followed by a number. Use this number to identify the boiler problem
and corrective action in the table below. If there is no Err display proceed to next Section:
Summary of Contents for PVG3
Page 14: ...14 Figure 4 Horizontal Vent Installation III Venting continued...
Page 16: ...16 Figure 7 Attic Offset Figure 6 Vertical Vent Installation III Venting continued...
Page 29: ...29 Figure 17 Wiring Connection Diagram VI Electrical continued...
Page 31: ...31 Figure 19 Circulator Zoned System Wiring Diagram VI Electrical continued...
Page 32: ...32 Figure 20 Zone Valve Zoned System Wiring Schematic VI Electrical continued...
Page 34: ...34 Figure 21 Modular Boiler Piping VII Modular Installation continued...
Page 36: ...36 Figure 22 Operating Instructions VIII System Start up continued...
Page 51: ...51 Figure 29 Flue and Burner Cleanout 1 Burner XI Service continued...
Page 54: ...54 XII Repair Parts continued...
Page 56: ...56 XII Repair Parts continued...
Page 60: ...60 XII Repair Parts continued...
Page 67: ...67 SERVICE RECORD DATE SERVICE PERFORMED...
Page 68: ...68 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 1 888 432 8887 www usboiler net...
