Mitsubishi Electronics PUY-A12NHA2-BS, PUZ-A42NHA2-BS, PUZ-A30NHA2 Guide for Operation Condition

11-2.GUIDE FOR OPERATION CONDITION

			Inspection item				Result
	-				Breaker	Good		Retightened
supplyPower	Loosecon
		nection	Terminal block		Outdoor Unit	Good		Retightened
					Indoor Unit	Good		Retightened
			(Insulation resistance)						M"
			(Voltage)						V
Com-			1	Accumulated operating time					Time
			2	Number of ON/OFF times					Times
pressor
			3 Current						A
	Temperature		4	Refrigerant/heat exchanger temperature		COOL	˚F	HEAT	˚F
Unit
			5	(Air/discharge temperature)		COOL	˚F	HEAT	˚F
				Refrigerant/discharge temperature		COOL	˚F	HEAT	˚F
			6	Air/outside air temperature		COOL	˚F	HEAT	˚F
Outdoor
	Cleanli-		Appearance			Good		Cleaning required
		ness	Sound/vibration			None		Present
			Heat exchanger			Good		Cleaning required
	Temperature		7	Air/intake air temperature		COOL	˚F	HEAT	˚F
Unit				(Air/discharge temperature)		COOL	˚F	HEAT	˚F
			8	Refrigerant/heat exchanger temperature		COOL	˚F	HEAT	˚F
			9	Filter operating time*					Time
Indoor	Cleanliness		Decorative panel			Good		Cleaning required
			Filter			Good		Cleaning required
			Fan			Good		Cleaning required
			Heat exchanger			Good		Cleaning required
			Sound/vibration			None		Present

* The filter operating time is the time that has elapsed since the filter was reset.

Check Points

Enter the temperature differences between 5, 4, 7 and 8 into the graph given below.

Operation state is determined according to the plotted areas on the graph.

For data measurements, set the fan speed to "Hi" before activat- ing maintenance mode.

Classification		Item		Result
	Inspection	Is "000" displayed stably in Display D		Stable	Unstable
		on the remote controller?
Cool	Temperature	(5 Discharge temperature) – (4 Outdoor			˚F
	difference	heat exchanger temperature)
		(7 Indoor intake air temperature) –	(8		˚F
		Indoor heat exchanger temperature)
	Inspection	Is "000" displayed stably in Display D		Stable	Unstable
		on the remote controller?
Heat	Temperature	(5 Discharge temperature) – (8 Indoor			˚F
	difference	heat exchanger temperature)
		(8 Indoor heat exchanger temperature) –			˚F
		(7 Indoor intake air temperature)

*Fixed Hz operation may not be possible under the following tempera- ture ranges.

A)In cool mode, outdoor intake air temperature is 104˚F or higher or indoor intake air temperature is 73˚F or lower.

B)In heat mode, outdoor intake air temperature is 68 ˚F or higher or indoor intake air temperature is 77 ˚F or lower.

*If the air conditioner is operated at a temperature range other than the ones above but operation is not stabilized after 30 minutes or more have elapsed, carry out inspection.

*In heat mode, the operation state may vary due to frost forming on the

outdoor heat exchanger.

Area		Judgment
	Check item
		Cool	Heat
Normal	Normal operation state
Filter inspection	Filter may be clogged. *1
Inspection A	Performance has dropped. Detailed in-
	spection is necessary.
Inspection B	Refrigerant amount is dropping.
Inspection C	Filter or indoor heat exchanger may be
	clogged.

Result

	Cool mode							Heat mode
Indoor		81					—		81			Inspection C
		˚F							˚F
87(—temperature)airintakeIndoor(	temperature)exchangerheat	0	18 36	54 72 90 108 126 144		˚F	8temperature)exchangerheatIndoor(	7temperature)airintakeIndoor(	72							˚F
										18 36 54 72 90				108 126 144
		72		Inspection C						Filter inspection
		63							63
		54							54
		45							45
			Filter inspection								Normal
		36		Normal					36
		27			Inspection B				27					Inspec	tion B
		18							18
			Inspection A								Inspection		A
		9							9
		[5 Discharge temperature] – [4 Outdoor						[5 Discharge temperature] – [8 Indoor
		heat exchanger temperature)						heat exchanger temperature)

*The above judgement is just guide based on Japanese standard conditions.

*1 It may be changed depending on the indoor and outdoor temperature. It may be judged as "filter inspection" due to the outdoor and indoor temperature, even though it is not clogged.

87