Vi - troubleshooting, Cont.) – LAARS IGE-199C-5(N,X) - Service Manual User Manual

Page 31

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31

Nature of Fault

Examination

Point

Diagnostic Point

Values

Y/N

Action

Service

Procedure

Error code "11"

displayed on

digital monitor.

5. Check ignition

module.

1. Measure voltage

between grey ~ grey of
connector F

8

(ignition

module).(See page 37)

2. # Remove connector

F

8

and measure the

resistance between

ignition module and

terminals. (See page 37)

90 ~ 110 VAC

Is resistance >1MΩ?

Yes

No

Yes

No

Go to B-5-2

Replace PCB

Go to B-5-3

Adjust/

Replace

ignition

module

IGE – 2

IGE – 4

3. Check if unit is

sparking.

Is the ignition

module sparking?

Yes

No

Go to B-6

Adjust/

Replace

electrode

6. Check main gas

solenoid valve (SV0)

Error code 71

1. # Disconnect the main

solenoid valve connector

E from the PCB, and

measure the resistance

between pink ~ black
(SV0)

2. Measure voltage

between pink ~ black of
SV0 connector.

(See page 38)

1.7 ~ 2.1KΩ

80 ~ 100 VDC

Yes

No

Yes

No

Go to B-6-2

Replace gas

valve

Go to B-7

Replace PCB

IGE – 9

IGE – 2

7. Check solenoid

valve (SV1)

1. # Disconnect

connector E from the

PCB. Measure resistance

between yellow ~ black
of (SV1).

2. Measure voltage

between yellow ~ black
of SV1 connector.

(See page 38)

1.7 ~ 2.1KΩ

80 ~ 100 VDC

Yes

No

Yes

No

Go to B-7-2

Replace gas

valve

Go to B-8

Replace PCB

IGE – 9

IGE – 2

8. Check

changeover solenoid

valve (SV2)

1. # Disconnect

connector E from the

PCB. And measure

resistance between blue

~ black (SV2)

2. Measure the voltage

between blue ~ black or
SV2 connector.

(See page 38)

1.7 ~ 2.1KΩ

80 ~ 100 VDC

Yes

No

Yes

No

Go to B-8-2

Replace gas

valve

Go to B-9

Replace PCB

IGE – 9

IGE – 2

Error code "14"

displayed on

digital monitor

9. Check thermal

fuse

10. Check overheat

(remaining flame) bi-

metal switch

1. # Disconnect

connector B

3

and C

3

measure resistance

between red ~ red.
2. # Disconnect OHS

(remaining flame) bi-

metal switch festoon

terminal B

3

and C

3

, and

measure resistance

between terminal on

switch. (See page 40)

Is resistance < 1Ω?

Is resistance < 1Ω?

Yes

No

Yes

No

Go to B-10

Replace

thermal fuse

Replace PCB

Replace

remaining

flame bi-metal

switch

IGE – 11

IGE – 2

VI - TROUBLESHOOTING

(cont.)

Troubleshooting Flow Chart

BEFORE CARRYING OUT CHECKS MARKED WITH

A # SIGN, DISCONNECT THE POWER SUPPLY.

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