Toshiba MMU-AP0091H service manual 160, P22 / 1A Outdoor fan Ipdu error

160

C

All heating operation
			NO				Is connector				NO
Does heating indoor fan						connection of indoor
normally operate?						heat exchanger fan or
YES							fan motor normal?
			NO				YES
Is indoor PMV normal?
										Repair faulty parts.
YES
					NO		Are characteristics				NO
	Is connector connection
						of sensor TC2 and TCJ
		coil normal?				resistance normal?
		YES					YES
				Repair faulty parts.					Replace TC2 or TCJ sensor.
					NO
	Is there a clogging?					Check indoor P.C. board.
							Faulty ÆReplace
		YES
	Replace PMV body							Repair check valve. ÆReplace
		.
			NO
Is check valve of main
								Repair check valve. ÆReplace
discharge pipe normal?
YES
Are there
any obstructions to the			YES
operation of the heat exchanger?								Eliminate the interfered causes.
1. Air filter clogging
2. Blocked heat exchanger
3. Air short circuit
NO
			NO
Is SV5 circuit normal?											Repair SV5 circuit.
											Coil error, choke,
YES								(disconnection of cable, etc. )
			Abnormal
Check operation of 4-way valve.										Replace 4-way valve.
Normal
			Abnormal
Check clogging of SV11 circuit.									Replace defective parts.
Normal
Are there indoor units connected			NO
									Check and correct cabling.
to different refrigerant circuits?			Use the mis-wiring check function
YES			( of outdoor unit.				)
Refrigerant overcharge,
clogging, pipe breakage,
abnormal overload condition

Check code Check code name Cause of operation

[P22] / [1A]	Outdoor fan IPDU error	1. Fan lock
(TCC-L / AI-NET)		2.	Fan IPDU P.C. board error
		3.	Overload
		4.	External cause such as power surge
		5.	Fan IPDU power P.C. board error

Sub-code:	0 ∗	: IGBT short circuit	1 ∗	: Position detect circuit error
	3 ∗	: Motor lock error	4 ∗	: Motor current error detected
	C∗	: TH sensor error (Heat sink overheat)	D∗	: TH sensor error
	E ∗	: Vdc error

Are wire connections on the fan IPDU	NO	Correct cable connector connection.
and the power P.C. board assembly normal?

YES
	YES
Is the outdoor fan motor locked?
NO
	NO
Is winding resistance of the motor correct?
		Replace motor.
13 to 33W(Between R and S, R and T, S and T)
YES
	YES
Is the fan IPDU firmly attached to the heat sink.		Retightening of screws, etc.
YES
	YES
Is sub-code of outdoor I/F P.C. board [0d]?		Replace fan IPDU.
NO
	YES
Is there no problem such as stuffing or
		Correct cause of overload.
blast blowing to discharge port of outdoor fan?
NO
Check fan IPDU.