ESI (Ultra) Service Manual
Manufacturer reserves the right to change specifications or designs without notice.
ESI (Ultra) R-410A
Unitary Service Manual
Contents
1. General Information ----------------------------- 2
2. ESI (Ultra) Unitary System ---------------------- 3
2.1 Refrigerant Circuit ------------------------------
3
2.2 Function and Control --------------------------
7
2.3
Field Setting ------------------------------------- 17
3. Troubleshooting ---------------------------------- 25
3.1
Problems without Codes --------------------- 25
3.2
Error Codes list --------------------------------- 35
4.
Parts List --------------------------------------------
61
5.
Appendix --------------------------------------------
63
5.1 Sensor Characteristics --------------------------
63
5.2
Wiring Diagram -------------------------------- 67
All phases of this installation must comply with National, State and Local Codes.
IMPORTANT
These instructions do not cover all variations in systems or provide for every possible contingency to
be met in connection with installing and servicing. Should further information be desired or should
particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter
should be referred to local distributor.
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