2. Processes and1.Specificationsfunctions

2-7 Overload Protection (Heating)

This function prevents the air conditioner from overloading.

(°F)

 

 

 

 

 

147

 

 

 

 

 

144

 

 

 

 

 

140

 

 

 

 

 

INDOOR UNIT COIL

 

 

 

 

 

TEMP. (E2)

 

 

 

 

 

138

 

 

 

 

 

131

 

 

 

 

 

127

OVERLOAD

 

 

 

 

 

 

 

 

 

 

PROTECTION

OVERLOAD PROTECTION

 

 

 

 

FUZZY CONTROL

 

FUZZY CONTROL

ELECTRONIC REF.

 

 

 

 

 

CONTROL VALVE

OPEN

OPEN

 

 

 

OUTDOOR FM

 

START UP

 

 

 

H OR M

COMPENSATION

H

M

H OR M

 

OFF

 

 

 

 

 

 

 

 

 

 

1140_THS_I

Fig. 10

Chart Explanations and notes

This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to keep the indoor heat exchanger coil from overloading.

When sensor E2 rises above 140°F the electronic refrigerant control valve opens at 50 steps/30 seconds until E2 falls below 138°F.

Sensor E2 is located in the middle of the indoor unit heat exchange unit.

When sensor E2 rises above 144°F, the control circuit stops the outdoor fan motor till the temp. drops to 131°F

Fuzzy control controls the electronic refrigerant control valve.

Section

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2

3

4

SM830076

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Sanyo XHS2432, XHS3632, CH2432 Overload Protection Heating, This function prevents the air conditioner from overloading

XHS3632, XHS2432, CH3632, CH2432 specifications

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