Rinnai E75CN - Manual (Page 86)

Installation & Servicing Instructions Rinnai E-Series
86
16 Other errors
central heating but no
domestic hot water
-Key of the hot
water program is not
switched on
DHW sensor of
flowswitch defective
when using RS101
16.1 Central heating but no hot water
three-port valve is not
circulating to DHW
- check timer times for DHW program,
if necessary reset
- RS101 does not respond to DHW program
- see RS101 installation instructions
fuse F2 MCBA defective
switch on DHW program on the Control
Tower
replace DHW sensor or flowswitch
check wiring
if necessary replace the three-port valve
motor