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Troubleshooting – Lochinvar 1.3 User Manual

Page 51

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51

3

Troubleshooting

(continued)

Service Manual

Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface

FAULT

DESCRIPTION

CORRECTIVE ACTION

Sensor Open

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the

display to reset.)

Either the inlet water or outlet water
temperature sensor has been disconnected.

• Check the sensors and their associated wiring.

Repair or replace the sensor or wiring if damaged.

• Measure the resistance of the sensors and compare

the resistance to the tables on page 45 of this
manual.

• Replace the sensor if necessary.

Sensor Shorted

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the

display to reset.)

Either the inlet water or outlet water
temperature sensor has been shorted.

• Check the sensors and their associated wiring.

Repair or replace the sensor or wiring if damaged.

• Measure the resistance of the sensors and compare

the resistance to the tables on page 45 of this
manual.

• Replace the sensor if necessary.

Flue Sensor

Open / Removed

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the

display to reset.)

The flue sensor has been disconnected or
removed from the flue.

• Check the sensor and its associated wiring. Repair

or replace the sensor or wiring if damaged.

• Measure the resistance of the sensors and compare

the resistance to the tables on page 45 of this
manual.

• Replace the sensor in flue.

• Replace the sensor if necessary.

Flue Sensor

Shorted

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the

display to reset.)

The flue sensor has been shorted.

• Check the sensor and its associated wiring. Repair

or replace the sensor or wiring if damaged.

• Measure the resistance of the sensors and compare

the resistance to the tables on page 45 of this
manual.

• Replace the sensor if necessary.

Louver Proving

Switch

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the

display to reset.)

An optional remote proving switch is not
making.

• Check function of remote devices.

• Check for loose or misplaced jumper if proving switch

is not installed.

Tank Open

Sensors equipped with an internal limit
(such as the Lochinvar Squire

®

Indirect

Tank), the limit has opened due to
temperature (195°F) or the sensor has
become disconnected.

• Check the tank temperature.

• Repair or replace the sensor wiring if damaged.

• Replace the sensor if necessary.

Parameters

Saved

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the

display to reset.)

After downloading parameters from a
laptop, the main control board must be
reset.

• Press the RESET button on the SMART

TOUCH display panel.