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Arctic Installation and Operation Manual
P/N 105641-01
Table 18: General Troubleshooting
INDICATION
Boiler is Running but
System or Boiler
Circulator is not
running.
Display Completely
Dark Fan off, LWCO
lights off, no green
power light on
Control.
Display Completely
Dark, Fan running.
Blinking Green
power light on
Control.
Blank Screen with
"Reading" shown.
Communication
Error 2
Communication
Error 3
44
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Web:
Phone: 717-239-7642 Fax: 877-501-5212 Email:
POSSIBLE CAUSE
Pump Not Running.
No 120 Vac Power
at Boiler due to
blown high voltage
fuse or circuit
breaker trip.
No 120 Vac Power
at Control; No 24
Vdc to Display.
Control Fault.
Display lost
communication
with Control.
Un-configured
control, or control
has a memory
failure.
Communication
Fault.
CORRECTIVE ACTION
Check wiring for loose connections or wiring errors.
When there is a Domestic Hot Water Heat Request
the System or Boiler Pump will be forced "off" when
their "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 "Priority protection" time or the end
of the Domestic Hot Water Heat Request the system
and boiler pumps will be free to run.
Check breaker and wiring between breaker and
boiler.
Replace blown high voltage fuse.
Reset tripped breaker.
Check for 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 if necessary.
Check for bad transformer or bad 24 Vdc power
supply: Replace if necessary.
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.
Failure to establish Communication upon boot-up
once you establish communication, reboot display
to read controller and setup display properly.
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.
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.
sales@thermalsolutions.com
Form: 2435-3
Revision: 10
Date: 12-1-2018
www.thermalsolutions.com
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