Sanyo KGS1411, CG1411 service manual Heating, Starting Flowchart, Stopping Flowchart

9-2. Heating

9-2-1. Starting Flowchart

Power Supply
		LD	2 3 4 5	Troubleshoot
Initial	NO
		E2P ROM read fail		Combustion lamp flashes
check 1 normal
YES
Operation starts				Operation lamp light	OFF

43

1

2

3

Flap motor			ON
Indoor fan		ON LL
			3
	Initial		NO	Room temp thermostat fail
check 2 normal				Coil temp thermistor fail		Operation lamp flashes
	YES		4
Operation lamp light			ON
Reversing valve			ON
				LD 2 3 4 5
	Gas
			NO
	combination valve &				Combustion lamp flashes
	circuit normal

Room temp.	NO
(lower than set temp.)

YES

Indoor fan	OFF
Flap motor	OFF

Operation stops

Operation lamp

Lamp flashes

Reversing valve	OFF
Compressor	OFF

3 min. timer

NO

count-up

YES

6

Compressor

ON

(3 sec. after)

NO

(more than 19A 2 sec. after)

7

Wire misconnection

Initial check 3

(more than 17A 8 sec. after)

Amp. current is high

normal

7

YES

Amp. current is low

Combustion lamp flashes

Reversing valve

OFF

LD

2 3 4 5

8

Thermistor 1, 2

NO

Compressor

OFF

normal

ON/OFF valve V1

OFF

YES

9

ON/OFF valve V2

OFF

Combustion motor

ON

(0 or 40 sec. after)

(3 sec. after from C )

10

ON/OFF valve V1

OFF

Proportional control valve

ON

Combustion motor

OFF

ON/OFF valve V2

OFF

ON/OFF valve V1

OFF

LD

2 3 4 5

(3 sec. after from

C )

ON/OFF valve V2

OFF

NO

(80 sec. after)

(3 sec. after from

C

)

Combustion motor

9

LD

2 3

4 5

rev. normal

NO

LD

2 3 4 5

Combustion motor

OFF

11

Flame sensor

(60 sec. after)

circuit normal

YES

Solenoid valve GV1

OFF

12

Thermal fuse bimetal

NO

LD

2 3 4 5

Combustion motor

OFF

Solenoid valve GV2

OFF

thermostat normal

(60 sec. after)

Proportional control

OFF

YES

valve PV

Solenoid valve GV1

OFF

Combustion lamp

OFF

13

Solenoid valve GV1

ON

Solenoid valve GV1

OFF

Solenoid valve GV2

OFF

c

14

Solenoid valve GV2

ON

Solenoid valve GV2

OFF

Solenoid valve GV1

OFF

Proportional control

OFF

15

Ignitor

ON

Proportional control

(60 sec. after)

LD

2 3 4 5

valve PV

valve PV

OFF

Detect flame

NO

(15 sec. after)

Solenoid valve GV1

OFF

11

Solenoid valve GV2

OFF

YES

(higher than 1μA)

Proportional control

YES

NO

17

Thermal fuse

valve PV

OFF

10 min.

passes

bimetal thermostat failure

Combustion lamp

ON

a

Ignitor

OFF

LD

2 3 4 5

from b

(12 sec. after)

Ignitor

OFF

First

NO

NO

YES

Thermistor-2

16

ON/OFF valve

ON

(3 sec. after

YES

(lower than 131°F 55°C)

from a )

YES

Proportional controlled

combustion

Thermistor-1

NO

LD

2 3

4 5

LD

2 3

4 5

Indoor coil temp.

NO

(lower than 122°F 50°C)

(lower than 32°C)

YES

YES

LD

2 3

4 5

LD

2 3 4 5

Less than 3 times

NO

2

Fan speed: Set speed

Thermistor-1

NO

Combustion motor

OFF

Combustion motor

OFF

Combustion motor

OFF

Combustion motor

OFF

8

(higher than 47°C)

(60 sec. after)

(60 sec. after)

(60 sec. after)

(60 sec. after)

YES

Thermistor-1

NO

Solenoid valve GV1

OFF

Solenoid valve GV1

OFF

Solenoid valve GV1

OFF

Solenoid valve GV1

OFF

17

Fan speed: Set speed

(higher than 42°C)

YES

Solenoid valve GV2

OFF

b

c

Solenoid valve GV2

OFF

c

Solenoid valve GV2

OFF

c

Solenoid valve GV2

OFF

(30 sec. after)

YES

Combustion

NO

Proportional control

OFF

Proportional control

OFF

Proportional control

OFF

Proportional control

OFF

ON/OFF valve 2

ON

continues more than

valve PV

valve PV

valve PV

valve PV

4 min.

Combustion lamp

OFF

Combustion lamp

OFF

First

NO

8

Thermistor-2

higher than (149°F 65°C)

Thermistor-1

17

ON/OFF valve failure

5

Reversing valve failure

4

Thermistor-1

°

°

higher than (149°F 68°C)

Safety device works

NO

11

Flame sensor failure

higher than (185 F 85 C)

YES

NO

Room temp.

(higher than set temp.)

: light off

: light on

YES

Indoor fan	OFF
Compressor	OFF
Solenoid valve GV1	OFF
Solenoid valve GV2	OFF

Proportional control valve OFF

Combustion lamp OFF

9-2-2. Stopping Flowchart

Operation starts
Operation lamp	Light OFF
Operation lamp	Light OFF
Compressor		OFF
Indoor fan		OFF
Solenoid valve GV1		OFF
Solenoid valve GV2		OFF
Proportional control valve		OFF
			(60 sec.
Combustion motor		OFF
			after)
On/Off valve V1		OFF
			(180 sec.
On/Off valve V2		OFF
			after)
Reversing valve		OFF