Legend of wiring diagram of auxiliary heater (ACH)

PE83.70-D-2001-60W

Legend of wiring diagram of auxiliary heater (ACH)

MODEL 901.6, 902.6, 903.6, 904.6
with CODE (HZ5) Warm water auxiliary heater 10kW with timer

Code

Designation

Coordinate

A12

Electrical center

9A

A71

Heater timer

15L

A81

Air conditioning pushbutton control module

12A
17A

A90

Warm water heater booster control module

28L
36L

A90b96

Flame sensor

37B

A90

Temperature sensor

35B

A90b98

Overheating sensor

33B

A90

Blower motor

31B

A90

Glow pin

32B

A90x1

Warm water heater booster connector, 8-pin

25J

E90

Warm water auxiliary heater control module

15A

F139

Auxiliary heater fuse (10 A)

23C

F155

Heater booster fuse (25 A)

21E

J16

Circuit 30 connector sleeve

21A

J22

Circuit 15 fused connector sleeve

6E

J31

Circuit 15 fused connector sleeve

23A

J377

Circuit 30 connector sleeve

7E

J425

Circuit 15 fused connector sleeve

23E

J453

Diagnostic line connector sleeve

22E

J454

Warm water heater booster control unit connector sleeve

16G

J471

Circulation pump connector sleeve

5E

J473

Circulation pump connector sleeve

3E

J474

Circulation pump connector sleeve

1E
5G

K103

Circulating pump relay

5A

M51

Coolant circulation pump

5L

M60

Coolant circulation pump

2A

M61

Metering pump

19A

P11

Diagnostic socket 14-pin

22A

V15

Circulation pump diode

3L

W4

Ground point firewall

4G

W5

Ground point seat frame

2G
20A

W7

Ground point (engine compartment)

20A

X79

Frame/waistrail plug connection

15G

X82

Frame/waistrail plug connection

11E
17E

X164

Warm water auxiliary heater connector, 2-pin

13E

X165

Warm water auxiliary heater connector, 8-pin

14E