Service Manual

3 Troubleshooting

Table 3E Troubleshooting Chart - Noisy System

FAULT

 

CAUSE

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

 

 

- Supply gas problem. Natural gas pressures

• Refer

to Section

6 -

Gas

Connections

of

the SYNC

 

should be between 4 inches w.c. (1.0 kPa)

Installation and

Operation Manual

for

detailed

 

and

14 inches w.c. (3.5 kPa). LP gas

 

information concerning the gas supply.

 

 

 

pressures should be between 8 inches w.c.

 

 

 

 

 

 

 

 

 

 

 

(2.0 kPa) and 14 inches w.c. (3.2 kPa).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Refer

to the Gas Valve Adjustment Procedure on

 

 

 

page 55 of this manual for the proper gas valve setting.

 

- Gas/air mixture problem.

Verify that the vent/air intake lengths do not exceed the

 

 

 

maximum listed in the General Venting section of the

 

 

 

SYNC Installation and Operation Manual.

 

 

Noisy

 

 

 

 

 

 

 

 

 

 

 

• Refer to page 39 in this manual for the burner removal

Operation

 

 

- Dirty/damaged burner.

and inspection procedure. Clean or replace the burner

 

 

 

 

as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

• Refer

to Section 6 - Hydronic Piping of the

 

 

 

SYNC

Installation

and

Operation

Manual for

-Low water flow through the heat exchanger. minimum flow rates. Verify that the boiler is piped in a primary/secondary fashion and that the boiler and system pump are running on a call for heat.

 

- Air in the piping system.

• Properly purge all air from the piping system.

 

 

 

 

 

 

 

 

 

 

- Low system water pressure.

• Verify

system pressure is a

minimum of

12

psi

 

(82.7 kPa).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No Pump

- Blown fuse.

• Replace fuse F5 on the control board, see page 43 of

this manual.

 

 

 

 

 

 

 

 

 

Operation -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Boiler Pump

- Faulty pump.

• Replace pump.

 

 

 

 

 

 

 

 

System Pump

 

 

 

 

 

 

 

 

 

 

 

 

- Internal fault on control board.

• Replace main control board.

 

 

 

 

 

 

or

 

 

 

 

 

 

HW Pump

- Faulty pump relay.

• Replace relay.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Lower

the

system

pressure

below

the

50

psi

Relief Valve

 

(344.7 kPa) rating of the supplied relief valve or replace

- System pressure exceeds relief valve

the standard relief valve with a higher rated valve up to

Opening

setting.

the maximum pressure of the heat exchanger.

 

 

 

 

• Improperly sized expansion tank.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Reset the pressure switches.

 

 

 

 

 

 

 

 

• Measure the supply gas pressure to determine cause

Gas Pressure

 

of failure. Natural gas pressures should be between

 

4 -

14 inches w.c.

(1.0 -

3.5

kPa)

and

LP

gas

Switch

 

 

pressures

should

be

between

8

- 14

inches

w.c.

(will require a

 

Either the manual reset low gas pressure

(2.0 - 3.2 kPa).

 

 

 

 

 

 

 

 

manual reset once

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the condition has

switch or the manual reset high gas pressure

• Refer to Section 6 - Gas Connections of the SYNC

been corrected.

switch tripped.

Installation

and

Operation

Manual

for

detailed

Press the RESET

 

 

information concerning the gas supply.

 

 

 

button on the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

display to reset.)

 

• Correct the supply gas pressure if necessary.

 

 

 

 

 

 

 

 

• Check for a loose or misplaced jumper if pressure

 

 

switches are not installed.

 

 

 

 

 

 

46

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Lochinvar 1 service manual Noisy, No Pump, Operation Boiler Pump, System Pump, HW Pump, Relief Valve, Opening
Page 45 Page 47

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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