Sanyo TH4242 / CH4242, XH3642 / CH3642, XH4242 / CH4242 Cold Draft Prevention Heating Cycle

2. Processes and functions

2-2 Cold Draft Prevention (Heating Cycle)

2

The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up.

❑STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF. This condition occurs in the following 3 cases:

•During Thermo OFF (refer to 2-1 B). Room Temperature Control, Heating)

•During the defrosting operation (refer to 2-10 Defrosting Control, Heating)

•Until either the coil temperature E2 reaches 81°F or when a maximum of 6 minutes has past.

❑The indoor fan motor operates in L instead of LL for 3 seconds as it starts to give the fan an initial boost.

			92
						MAX. 6 MINUTES
INDOOR UNIT			88
	COIL TEMP.
	E2 (°F)		81
			77
			50
SET		AUTO OR H		LL		LL/OFF	LL	L		M	H
FAN			M	LL		LL/OFF	LL	L		M	M
SPEED
			L	LL		LL/OFF	LL	L		L	L
	“STANDBY”
						“STANDBY” APPEARS
	INDICATOR
					LL= Very low speed				M= Medium speed
					L= Low speed				H= High speed		1135_THS_I

Fig. 3

Chart Summary and Explanations

❑The main idea of this chart is to show that the indoor fan speed increases and gets closer to the set fan speed as the coil temperature E2 rises.

❑The indoor unit’s coil temperature is taken from sensor E2 located in the middle of the indoor heat exchange coil.

❑The dotted line shows that the indoor fan motor is OFF. When the temperature at sensor E2 falls below 50°F, the indoor fan motor stops running.

SM830082

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