Service manual

ESIE03–01 Error Codes: System Malfunctions

Part 3 – Troubleshooting 3–61

Part 3

4 Error Codes: System Malfunctions

4.1 What Is in This Chapter?

Introduction In the first stage of the troubleshooting sequence, it is important to correctly interpret the error code on

the remote controller display. The error code helps you to find the cause of the problem.

Overview This chapter contains the following topics:

Topic See page

4.2–Gas Shortage Detection (UO) 3–62

4.3–Reverse Phase (U1) 3–63

4.4–Transmission Error between Indoor and Outdoor Unit (U4 or UF) 3–65

4.5–Transmission Error between Indoor Unit and Remote Controller (U5) 3–67

4.6–Transmission Error between MAIN Remote Controller and SUB Remote

Controller (U8)

3–68

4.7–Malfunctioning Field Setting Switch (UA) 3–69