Hunter Fan UH68ODK Note on Blink Codes, Troubleshooting Procedures Electrical Schematic, Ignition

UH68ODK Tent Heater

Note on Blink Codes

Only the ignition fault will stop heater operation. The other flash codes will be displayed but the heater will continue to operate.

Troubleshooting Procedures

Electrical Schematic

0.1uF

C12

R21

U5

D7

C11

R10

R15

150

D12 LED

6

1

VENT FAN

R8

180

180

1N4001

0.1uF

M2

U8

5

2

J10

J12

SW1

J6

38

D8

1

1

SW-SP-ON-OFF-ON

1

C8

1N4001

2

2

2

G

4

ZCC

3

3

3

D9

M1

4

4

CONN-H2

0.01uF

R9

5

5

R19

MOC3031

6

6

1K

CONN-H6CONN-H6

150

LED

CARB HTR

R11

U4

R14

1

J13

6

1

2

J5

180

180

R6

3

1

M2

U7

5

2

4

2

38

CONN-H4

CONN-H2

C9

G

4

ZCC

3

R22

D10

IGNITION

0.01uF

M1

R7

MOC3031

150

LED

J4

1

1K

R20

D11

2

CONN-H2

150

LED

U6

R12

R13

COMB BLR

6

1

180

180

C7

S1

J3

R3

1

M2

U9

5

2

J11

J15

38

2

0.1uF

1

1

U3

CONN-H2

C10

G

4

ZCC

3

1

8

2

2

V+

GND

CONN-H2CONN-H2

0.01uF

M1

2

GP5/OSC1/CLK

GP0/AN0

7

R5

TR1

MOC3031

3

6

BRIDGE

GP4/OSC2/AN3 GP1/AN1/Vref

FLAME SWITCH

4 A 600V

AC1

BR1

24 V @ 1.5A

1K

4

GP3/MCLR

GP2/T0CLK/AN2/I

5

5

1

N.O. 125F (i.e. it closes at 125F)

-

+

PIC12C67X

U2

AC2

R17

R23

1

8

6

nc

nc

10K

10K

2

V+

nc

7

3

6

7

V-

nc

4

5

nc

nc

D4

8

4

C2

TMP17

TVS

TR2

D5

C3

R18

BR2

C1

1

5

5.6K

4.7V

22uF

22uF

D1

D3

AC2

6

330uF 63WV

J14

7

-

+

1

AC1

MOV

MOV

2

J1

4

8

U1

BRIDGE

1

OVERHEAT SW

L4805

8V @ 300mA

1.5 A 100V

2

R16

MOUSER # 511-L4805CV

D2

1

VI

VO

3

FUEL PUMP

5.0

MOV

GND

C4

J2

J7

1

J8

J9

C6

1

C5

D6

2

0.1uF

2

2

100uF

3

100uF

TVS-18V

Cir.Brk1Cir.Brk2

FUEL SOL.

CONN-H3

R2

500K

R1

R4

20K

500K

D13

1N4004

4-2