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Troubleshooting – Lochinvar CREST 3 User Manual

Page 45

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3

Troubleshooting

(continued)

Service Manual

45

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

FAULT

DESCRIPTION

CORRECTIVE ACTION

Fan Speed Low 1

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the
SMART TOUCH

display

to reset.)

The actual fan 1 RPM is 30% lower than
what is being called for.

• Vent/air intake lengths exceed the maximum allowed
lengths. Refer to Section 2 - General Venting of the
Crest Installation and Operation Manual for
proper lengths.
• Check for obstruction or blockage in the vent/air
intake pipes or at terminations.
• Check the wiring connections at fan 1 and at the
main control board.
• Replace the fan.

Blown fuse.

• Replace fuse F2 on the control board, see page 36
of this manual.

Fan Speed Low 2

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the
SMART TOUCH

display

to reset.)

The actual fan 2 RPM is 30% lower than
what is being called for.

• Vent/air intake lengths exceed the maximum allowed
lengths. Refer to Section 2 - General Venting of the
Crest Installation and Operation Manual for
proper lengths.

• Check for obstruction or blockage in the vent/air
intake pipes or at terminations.

• Check the wiring connections at fan 2 and at the
main control board.

• Replace the fan.

Blown fuse.

• Replace fuse F2 on the control board, see page 36
of this manual.

Fan Speed High 1

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the
SMART TOUCH

display

to reset.)

The actual fan 1 RPM is 30% higher than
what is being called for.

• Vent/air intake lengths exceed the maximum allowed
lengths. Refer to Section 2 - General Venting of the
Crest Installation and Operation Manual for
proper lengths.

• Check for obstruction or blockage in the vent/air
intake pipes or at terminations.

• Check the wiring connections at the fan and at the
main control board.

• Replace the fan.

Fan Speed High 2

(will require a manual

reset once the condition

has been corrected. Press

the RESET button on the
SMART TOUCH

display

to reset.)

The actual fan 2 RPM is 30% higher than
what is being called for.

• Vent/air intake lengths exceed the maximum allowed
lengths. Refer to Section 2 - General Venting of the
Crest Installation and Operation Manual for
proper lengths.

• Check for obstruction or blockage in the vent/air
intake pipes or at terminations.

• Check the wiring connections at the fan and at the
main control board.

• Replace the fan.

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