Form: 2435
Revision: 9
Free Flex Installation and Operation Manual
Date: 9-1-2017
Bryan Steam LLC, 783 N Chili Ave, Peru IN 46970
Web:
www.
bryanboilers
.com
Phone:
765-473-6651
Fax:
765-473-3074
Email:
46
Table 17: General Troubleshooting
INDICATION
POSSIBLE CAUSE
CORRECTIVE ACTION
Display Completely
Dar, Fun running.
No 120 Vac Power at
Control; No 24 Vdc to
Display.
Check loose 120 Vac connection wiring
between boiler J-Box and transformer or 24
Vdc power supply.
Check for loose 24 Vac connection wiring
between transformer and Control.
Check blown low voltage fuse: Replace in
necessary.
Check for bad transformer or bad 24 Vdc
power supply: Replace if necessary.
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 flash. The microprocessors are not
running. Try disconnecting all terminals
except 24 Vac 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 the faulty wiring reconnected,
green light will begin to flash.
Blank Screen with
“Reading” shown.
Display lost
communication with
Control.
Failure to establish Communication upon boot-
up once you establish communication, reboot
display to read controller and setup display
properly.
Communication Error
2
Un-configured control,
or control has a
memory failure.
The display-write attempt has failed. The
controller is un-configured or has a memory
failure. Lockout 20 Safety Data Verification will
also be displayed. Replace Control.
Communication Error
3
Communication Fault.
Display has lost communication with
controller.
Check for loose or defective display harness,
defective display or defective control.
Refer to Concert Boiler Control manual for
more details.
Short Cycling
Oversized Boiler
Examine system and boiler operational settings
to determine what adjustments may be made
to reduce boiler cycling.
Contact Manufacturer.
Incorrect Gas Valve
Settings
If combustion is too lean or rich as a result of
improper gas valve settings, adjust air-fuel
ratio to match factory O2 settings.
Poor Combustion
Dirty Heat Exchanger
Inspect heat exchanger tubes for damage and
carbon build-up. Inspect and clean the burner
assembly. Refer to the Service, Maintenance
and Inspection section of the manual for
guidance.