Service Manual

 

3

Troubleshooting (continued)

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

FAULT

DESCRIPTION

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

 

 

 

 

lengths. Refer to Section 2 - General Venting of the

Fan Speed Low 1

 

 

Crest Installation and Operation Manual

for

 

 

proper lengths.

 

 

(will require a manual

The actual fan 1 RPM is 30% lower than

• Check for obstruction or blockage in the vent/air

reset once the condition

what is being called for.

intake pipes or at terminations.

 

has been corrected. Press

 

 

• Check the wiring connections at fan 1 and at

the

the RESET button on the

 

 

 

 

main control board.

 

SMART TOUCH display

 

 

 

 

 

• Replace the fan.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

Blown fuse.

• Replace fuse F2 on the control board, see page 36

 

 

of this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

 

 

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

 

 

Crest Installation and Operation Manual

for

Fan Speed Low 2

 

 

proper lengths.

 

 

(will require a manual

The actual fan 2 RPM is 30% lower than

• Check for obstruction or blockage in the vent/air

reset once the condition

what is being called for.

intake pipes or at terminations.

 

has been corrected. Press

 

 

• Check the wiring connections at fan 2 and at

the

the RESET button on the

 

 

 

 

main control board.

 

SMART TOUCH display

 

 

 

 

 

• Replace the fan.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

Blown fuse.

• Replace fuse F2 on the control board, see page 36

 

 

of this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

Fan Speed High 1

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

Crest Installation and Operation Manual

for

 

(will require a manual

 

 

proper lengths.

 

reset once the condition

The actual fan 1 RPM is 30% higher than

• Check for obstruction or blockage in the vent/air

has been corrected. Press

what is being called for.

intake pipes or at terminations.

 

the RESET button on the

• Check the wiring connections at the fan and at the

SMART TOUCH display

 

 

 

 

main control board.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

• Replace the fan.

 

 

 

 

 

 

 

 

 

 

• Vent/air intake lengths exceed the maximum allowed

Fan Speed High 2

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

Crest Installation and Operation Manual

for

 

(will require a manual

 

 

proper lengths.

 

reset once the condition

The actual fan 2 RPM is 30% higher than

• Check for obstruction or blockage in the vent/air

has been corrected. Press

what is being called for.

intake pipes or at terminations.

 

the RESET button on the

• Check the wiring connections at the fan and at the

SMART TOUCH display

 

 

 

 

main control board.

 

 

to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

• Replace the fan.

 

 

 

 

 

 

 

 

45

Page 45
Image 45
Lochinvar 1.5, 3.5, 2.5 service manual Fault Description Corrective Action

3, 2, 3.5, 2.5, 1.5 specifications

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