INTRODUCTION
A-9
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Functions and Control
Over-Temperature Heat Mode Indoor Coil
The over-temperature routine will protect the system from excessive high indoor coil temperature during heat mode operation.
The routine will initiate if the indoor coil temperature sensor reads temperatures in excess of 131F. Conditions that cause high
indoor coil temperature include indoor fan failure, dirty indoor coil and operating the system in heat mode when outdoor air
temperatures exceed operating limit. (Too warm outside)
Should this routine be initiated, the system will reduce compressor frequency until the indoor coil temperature reaches 117F.
Once this is achieved, the system will return to normal operation.
149°F
131°F
138°F
117°F
124°F
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