Toshiba MMU-AP0091H service manual 130, Detected

130

		Check code
				Detected	Check code name	Status	Error detection condition	Check item (position)
Main	Outdoor 7-segment display		AI-NET
				position
remote			central control
controller	Check code	Sub-code	remote controller
H16	H16	01: TK1 oil circuit system error	d7	I/F	Oil level detective circuit system error	All stop	Temperature change of TK1	• Check TK1 sensor coming-off.
		02: TK2 oil circuit system error			MG-SW error		could not be detected after	• Check characteristics of TK1 sensor resistance value.
		03: TK3 oil circuit system error			OCR operation		compressor 1 started	• Check TK1, TK2, TK3, and TK4 misconnection.
							operation.
		04: TK4 oil circuit system error						• Check operation error of SV3E valve.
								• Check capillary clogging of oil-equation circuit and
								operation error of stop valve.
								• Check refrigerant stagnation in compressor.
								• Check MG-SW or OCR.
							Temperature change of TK2	• Check TK2 sensor coming-off.
							could not be detected after	• Check characteristics of TK2 sensor resistance value.
							compressor 2 started	• Check TK1, TK2, TK3, and TK4 misconnection.
							operation.
								• Check SV3E valve operation.
								• Check capillary clogging of oil equalization circuit and
								check stop valve operation.
								• Check refrigerant stagnation in compressor shell.
								• Check MG-SW or OCR.
							Temperature change of TK3	• Check TK3 sensor coming-off.
							could not be detected after	• Check characteristics of TK3 sensor resistance value.
							compressor started	• Check TK1, TK2, TK3, and TK4 misconnection.
							operation.
								• Check SV3E valve operation.
								• Check capillary clogging of oil-equalization circuit and
								check valve operation.
								• Check refrigerant stagnation in compressor shell.
								• Check MG-SW or OCR.
							Temperature change of TK4	• Check TK4 sensor coming-off.
							could not be detected after	• Check characteristics of TK4 sensor resistance value.
							compressor started	• Check TK1, TK2, TK3, and TK4 misconnection.
							operation, or the difference
								• Check SV3E valve operation.
							from other TK sensor
								• Check capillary clogging of oil-equalization circuit and
							changed for a constant time
							only within the specified	check valve operation.
							range.	• Check refrigerant stagnation in compressor shell.
								• Check MG-SW or OCR.
L03	—	—	96	Indoor	Duplicated indoor center units	Corresponding	There are multiple header	• Check indoor address.
						unit only stops.	units in a group.	• Check the change of remote controller connection
								(Group/individual) after indoor address setup.
L04	L04	—	96	I/F	Duplicated outdoor line address	All stop	Line address setup is	• Check line address.
							duplicated against the
							outdoor unit in different
							refrigerant pipe system.
L05	—	—	96	I/F	Duplicated indoor units with priority	All stop	Indoor units with priority were	• Check display of indoor unit with priority.
					(Displayed on indoor unit with priority)		duplicated.

MG-SW : Magnet Switch, OCR : Over-current Relay