Service Manual

3 Troubleshooting

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

FAULT

DESCRIPTION

 

CORRECTIVE ACTION

 

 

 

 

 

 

• If 24 VAC is present at the main control board, check

 

 

the wiring between the main control board and the gas

 

 

valve. Replace the wiring if necessary. Do not

 

 

disconnect the wiring from the gas valve and attempt

 

 

to measure voltage at that point. The main control

 

 

board can detect if the gas valve is not connected and

 

 

will display the Gas Valve / Connection fault.

 

 

 

• If 24 VAC is present, check the outlet of the valve to

Burner Did Not

 

ensure the valve is flowing gas. With a manometer

 

connected to the outlet tap of the gas valve, when the

Light (cont’d)

 

The unit has failed to prove main burner

unit is in the prepurge period, there should be a

(will require a manual

negative pressure present. When the valve is

reset once the condition

ignition after one attempt. It will require a

energized a change in pressure should occur. If the

has been corrected.

manual reset before attempting to fire again.

pressure change does not occur, the gas valve is not

Press the RESET button

 

 

opening. Replace the gas valve.

 

 

 

 

on the display to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Inspect flame sensor and associated wiring.

 

 

Reference page 39 of this manual for removal and

 

 

cleaning procedures. Replace if necessary.

 

 

 

• Inspect the burner. Reference page 39 of this manual

 

 

for removal and cleaning procedures. Replace if

 

 

necessary.

 

 

 

 

 

 

 

• Replace the main control board.

 

 

 

 

 

 

 

 

 

• Inspect spark electrode and associated wiring for

 

 

damage and connection. Reference page 39 of this

 

 

manual for removal and cleaning procedures.

 

 

Replace if necessary.

 

 

 

 

 

 

• Check for proper electrical grounding of unit.

 

 

 

• Check incoming supply gas pressure. Natural gas

 

 

pressures should be between 4 -

14

inches

w.c.

Flame Lost

 

(1.0

- 3.5

kPa) and LP gas pressures

should be

 

between 8

- 14 inches w.c.

(2.0

-

3.2

kPa).

While Running

 

The unit was running and lost the flame

Refer to Section 6 - Gas Connections of the SYNC

(will require a manual

Installation and Operation Manual for detailed

reset once the condition

signal. This condition occurred twice .

information concerning the gas supply.

 

 

 

has been corrected.

 

 

 

 

 

 

 

 

 

 

 

 

Press the RESET button

 

• Verify that the plastic hose from the gas valve to the air

on the display to reset.)

 

 

inlet is connected and is not damaged.

 

 

 

 

 

 

 

 

 

 

• Verify that the vent/air intake pipes are installed

 

 

correctly and there are no obstructions.

 

 

 

 

 

• Check for 24 VAC to the gas valve at the 2-pin

 

 

connection on the side of the main control board

 

 

during the ignition attempt. If no voltage is present,

 

 

replace the main control board.

 

 

 

 

 

 

 

 

 

 

 

 

 

48

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Image 48
Lochinvar 1.3 service manual Light cont’d, Flame Lost, While Running
Page 47 Page 49

1.3, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

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In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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