Lochinvar 81-286 service manual Rem Ctrl Flt, Parameters Progr, Service Blk

FAULT

DESCRIPTION

CORRECTIVE ACTION

• Verify that the boiler pump is set to the proper speed

Outlet Temp

or that the boiler pump is the proper size. Reference

Section

6 - Hydronic Piping of the Knight

Boiler

High

Outlet water temperature has exceeded the

Installation and Operation Manual for boiler pump

(continued)

maximum outlet water temperature.

specifications.

• Replace the main control board.

• Check set point of the external control.

• Check the wiring between the external control and the

Rem Ctrl Flt

External control is cycling too often.

unit.

• Replace the control.

Parameters

Progr

(will require a manual

reset once the condition

After downloading parameters from a laptop,

• Press the ENTER/RESET button on the SMART

has been corrected. Press

the main control board must be reset.

SYSTEM display panel.

the RESET button on the

SMART SYSTEM display

to reset.)

While the unit is in Service Mode, the outlet

• Establish a heating load to remove the heat from the

temperature has exceeded 185°F.

boiler loop.

• Verify that the system is full of water and that all air

has been properly purged from the system.

• Verify that the boiler is piped properly into the heating

system. Refer to Section 6 - Hydronic Piping of the

Knight

Boiler Installation and

Operation

Service Blk

Manual for the proper piping methods for the Knight

boiler.

• Check 120 vac to the boiler pump motor on a call for

heat. If voltage is not present, check the wiring back

to the main control board. Replace the main control

board if necessary.

• If 120 vac is present on a call for heat and the boiler

pump is not operating, replace the pump.

• Verify that the boiler pump is set to the proper speed

or that the boiler pump is the proper size. Reference

Section

6 - Hydronic Piping of

the

Knight

Boiler Installation and Operation Manual for boiler

pump specifications.