8-8. Overload Prevention (Heating)
8-8-1. Indoor Unit
●This function prevents overheating of the indoor heat exchange coil.
●When the temperature of the indoor heat exchange coil rises above 131°F (55°C), and if the indoor fan is L (low speed), then the fan speed changes from L (low speed) to M (medium speed).
131°F |
|
|
(55°C) |
|
|
Indoor heat |
|
|
exch.coil |
|
|
temp. |
|
|
113°F |
|
|
(45°C) |
|
|
Indoor fan | H or M or L | H→H, M→M, L→M |
|
| |
Compressor |
| ON |
8-8-2. Outdoor Unit
●Unless the temperature of Thermistor 1 drops to 144°F (62 °C) or less from the point A within 1 minute, The burner is set to M (point C.)
●Reset is activated when the temperature of Thermistor 1 drops to 122°F (50°C) or less, with the burner being set to H.
●
Thermistor 1
B
A
149°F (65°C)
144°F (62°C)
1 minute
122°F (50°C)
| C |
| |
H | M | H | |
Combustion | Stop | ||
L | |||
Compressor |
|
|
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