Hunter Fan R410A manual FDCVA151~251 type

Outdoor Unit controller failure diagnosis circuit diagram

FDCVA151~251 type

● Outdoor unit check points Check items with the *mark when the power is ON.

- 24 -

❇

Power Supply Check

Noise Filter Check:

DC

Reactor Continuity

Power

transistor module

Measure the power supply at L.N.

There should be continuity.

Check: 50 mΩ or higher,

check: Is there a short cir-

(It is normal if it is AC 220/240V.)

There should be no shorts between phases.

less than 100 mΩ.

cuit, open circuit or dam-

age? (See 160 page for the

check procedure.)

TB

F5

(20A)

Orange

L

Red

T21

T24

CM

N

White

T22

Gray

To indoor unit

T25

E

Y/NG

Sub PCB

Brown

(Noise filter)

T26

Red

White

Black

TB

T30

Fuse Check: There should be

CNI1

T28

T27

U

V

W

continuity.

Orange

Yellow

T6

T7

T8

CNI2 CNI3

T2

T4

Power transistor module

T1

T5

Power transistor thermistor temperature and
resistance characteristics check									80˚C]
80˚C]	100							10
> =			<						< =
[T		T		80˚C					[T
(kΩ)						T >80˚C			(kΩ)
resistance									resistance
	50							5
Thermistor	0	20		50	80	100	120	0	Thermistor
	0
		Temperature [ T ] (˚C)

CnTR

F2 (250V 20A)

Control PCB

F3 (250V 1A)

				DC280V
1	2	3	4	6

	When the outdoor
FM0	unit fan motor is
	abnormal:
	(Refer to page 157)

LED1

Red

LED1 (Red) Check		Fuse Check: There should be continuity.
Light continuously	: Normal	If faulty, replace the control PCB.
Keeps flashing :	EEV
1~3 time flash :	Refer to 131 page