Installation Manual

102 Rinnai I-Series Condensing Boiler Solo Manual
999
PC Board Mismatch
• This code occurs when the PC Board and
the internal logic do not match.
• Check if the soware versions of the
board and operaon board do not match.
FFF
Maintenance Indicator
• This code is a placeholder in diagnosc
code history indicang a service provider
performed maintenance or service.
• Enter this code aer performing service
by pressing and holding the Up buon,
then press and hold the Down buon,
and then press the Indirect Tank buon
simultaneously. FFF will appear on the
display.
No
Code
Boiler does not start heang with a heang
demand present
• Supply temperature or return
temperature inside the boiler may be too
hot.
• Ensure the pump operates properly.
No
Code
Boiler does not start heang the indirect
tank, although the indirect tank is calling for
heat
• Aer the tank priority me (Parameter
34) passes, the boiler will be in heang
priority for 60 minutes.
No
Code
The boiler does not operate with the CH
seng buon
• If DIP switch 2 is OFF, CH operaon will
operate via the room thermostat.
* See “Electrical Diagnoscs” on Technical
Data Sheet located on inside front cover of
boiler.
No
Code
Supply temperature is dierent
from the seng temperature on
the controller
• During outdoor sensor control,
the supply temperature will
vary dependent on the outdoor
temperature.
• During simultaneous operaon
of an Indirect Tank and CH, the
supply temperature for CH is
based on Indirect Tank control.
No
Code
CH capacity is insucient
• Ensure the parameters are
properly set for the installaon.
• During simultaneous operaon
of an Indirect Tank and CH, ow
volume to heang can be
reduced.
No
Code
Pump or fan even with no demand
• The boiler may start or operate
the pump for freeze protecon
operaon.
• The pump may intermiently
operate to prevent it from
becoming stuck.
Up and Down
Press the
Indirect Tank
buon
E;FFF