General Functionality - Daikin Altherma EKHBH Series Service Manual

ESIE06-03
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General Functionality

1.1 What Is in This Chapter?
Introduction This chapter will explain all functions not related to the compressor frequency control, outdoor unit fan
control and expansion valve control. These functions have been programmed to ensure the unit's
reliability and lifetime, enable the operation in case of malfunction.
Overview This chapter contains the following topics:
Topic
1.2–Preheating Operation
1.3–Four Way Valve Switching
1.4–Freeze-up Protection Control
Part 2 – Functional Description
General Functionality
Part 2
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