Install Instructions

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Faults are investigated by selecting the “Help” button from the “Home” screen. When a fault is active the “Help” button ashes
and the home screen turns a red color. Continue to select ashing buttons to be directed to the Fault cause.
XII. Troubleshooting
Indication Condition Possible Cause
Display Completely Dark
Fan off, LWCO lights off, no green power
light on Control
No 120Vac Power
at Boiler
Check breaker and wiring between breaker panel and boiler.
Display Completely Dark, Fan running No 24Vac
Power to Control
- Loose 120Vac connection wiring between boiler J-Box and transformer
- Loose 24 Vac connection wiring between transformer and Control.
Blinking Green power light on Control Control
Fault
- The green light is connected to internal power supply. The power supply
is repeatedly starting and stopping (not normal) making the light ash. The
microprocessors are not running.
- Try disconnecting all terminals except 24VAC to power the Control. The
green light should be steady. If it is not, then the control is defective. If
steady, start plugging in all the connectors while watching the green light.
When faulty wiring reconnected, green light will begin to ash.
Display Completely Dark but Boiler res No 5 Vdc
Power to Display
- Loose 5 Vdc connection wiring between display and Control
- Defective Display or Control.
**00FF or **ERFF display lost
communication
with control
- Loose or defective display harness
- Defective Display
- Defective Control
ER0011 Adjustment Mode
Password Timeout
- The Control and Display are NOT defective. The password has timed out.
Simply cycle power to the Display to restore operation.
ER0012 Control Failed Defective Control. Replace Sage.
B. Display Faults:
A. Troubleshooting problems where no error code is displayed.
Condition Possible Cause
Boiler not responding to call for heat, “Status” and
“Priority” show “Standby”.
Boiler is not seeing call for heat. Check thermostat or zone wiring for loose connection,
miswiring, or defective thermostat/zone control.
Boiler not responding to a call for heat, “Status”
shows “Standby” and “Priority” shows Central Heat
or Domestic Hot Water.
Boiler is not ring, temperature is greater than setpoint. Water ow through boiler primary
loop non-existent or too low.
Boiler Running but System or Boiler Circulator is
not running
• Check wiring for loose connection, miswiring.
• When there is a Domestic Hot Water Heat Request the System or Boiler pumps will be
forced “off” when there “Run Pump for” parameter is set to “Central heat, off DHW
demand” or “Central Heat, Optional Priority”. This has been set to allow all of the heat
to be provided for fast indirect water heater recovery. After one hour of “priority
protection” or the end of the Domestic Hot Water Heat Request the system and boiler
pumps will be free to run.
Home is cold during mild weather days • Increase Low Boiler Water Temperature parameter 5°F (2.8°C) per day.
Home is cold during cold weather days • Increase High Boiler Water Temperature parameter 5°F (2.8°C) per day
Figure 48: Help Menu
WARNING
Electrical Shock Hazard. Turn off power to boiler before working on wiring.