Heat Controller B-MMH12FA-1 manual Voltage of Connectors according to Indoor Fan Speed, Ry-Comp-B

Troubleshooting Guide

Voltage of Connectors according to Indoor Fan Speed

CN-MOTOR

												Input Power
				INDOOR
						FAN
				MOTOR				INDOOR PWB ASSY
4												1	3	4			3	4
3
												TAB-N
2													RY-COMP-A				RY-COMP-B
1
										Connecting wires
		CN-DC/DC
										between Indoor
										and Outdoor
1		2		3		4
									Indoor		Outdoor
	BL		BK		BR		RD	Connecting Terminal			Connecting Terminal				CN-COM
															BL	1
															BK
																2
															BR
																3
															RD
																4

	No. of pins			DC Voltage(±10%)
	+	-	S-Hi	Hi	Med	Low	Off
INDOOR	4	3	35.5	32.96	25.17	17.28	0
CN-
MOTOR	2	3	11.97	11.97	11.97	11.97	11.97
INDOOR	4	2	35.5	32.96	25.17	17.28	0
CN-
DC/DC	3	2	15.87	15.87	15.87	15.87	15.87
OUTDOO	4	2	35.5	32.96	25.17	17.28	0
R CN-
COM	3	2	15.87	15.87	15.87	15.87	15.87

Wall Mounted Multi-Zone Split System Air Conditioner - 70 -