7
Operating Instructions
Important Safety Information ....................................................................... 2
Contents ........................................................................................................ 7
General Parts
Main Unit .................................................................................................... 8
Names and Functions of Controllers
Main Controller (YPRM67XBN) ................................................................ 9
Bathroom Controller (YPRS67XBN) ....................................................... 10
Sub Controller (YPRP62XBN) ................................................................. 11
Initial Operation ........................................................................................... 12
Clock Adjustment ........................................................................................ 13
Setting and Using the Water Heater ........................................................... 14
Controller Priority Function ........................................................................ 16
Muting the Remote Controller .................................................................... 17
Bath Fill Function ........................................................................................ 18
Call Function ................................................................................................ 21
Frost Protection ........................................................................................... 22
Regular Maintenance ................................................................................... 23
Troubleshooting .......................................................................................... 25
Follow-up Service ........................................................................................ 29
Specifications .............................................................................................. 30
Manufacturer’s Warranty ............................................................................ 35
Contents
Summary of Contents for YS1780RA
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