Install Instructions

Installation & Servicing Instructions Rinnai Q-Series
76
Complaint Description Solution
Central heating but no
domestic hot water
1.
-Key of the DHW program is not
switched on
Switch on DHW program on the Control Tower
2. Cylinder sensor or thermostat defective. Replace cylinder sensor or thermostat
3. When using RS100 - Check timer times for DHW program,
if necessary reset
- RS100 does not respond to DHW program
- See RS100 installation instructions
4. Three-port valve is not circulating to
DHW
- Check wiring.
- If necessary replace the three-port valve
motor.
Hot water but no central
heating
1.
-Key of the central heating program
is not switched on.
Switch on central heating program
2. Room thermostat (on/off) is not giving
any signal to the boiler.
Check room thermostat
3. RS100 with outdoor sensor
(Room sensor-On)
- Outdoor temperature is higher than 70°F,
depending upon the Eco-temperature set
(70°F is the default). Check Info chapter
Step 7 or temperature is higher than the
Eco temperature set (see RS100 installation
instructions).
- Check timer program and set room
temperature.
4. Three-port valve is not circulating to
central heating position.
Check wiring, replace the three-port valve
motor.
Central heating
installation gets hot
without being requested
1.
-Key pump program is on.
Switch off.
2. Dirt in three-port valve or three-port valve
cartridge is binding.
Clean or replace.
3. Expansion tank incorrectly fi tted. Connect expansion tank between three-port
valve and pump (for Combi boiler or Solo with
external DHW tank this pipe connection is
present as standard).
Insuffi cient quantity of
hot water
1. Hot and cold water connection to the
boiler mixed up.
Check left = cold, right = hot
2. Incorrect fl ow reducing valve. - Check for the type and for contamination, if
necessary replace (Combi) and/or clean.
- Check the comfort synchronising valve for
the correct setting in accordance with the
installation instructions.
3. In the absence of positive results Check for lime scale. If necessary descale or
replace
16.4 Other Errors