Rinnai E110CP - Manuel (Page 78)

Installation & Servicing Instructions Rinnai E-Series
78
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. Flow switch is not working properly. Check fl ow and/or check for impurities. Check
on functioning. Replace if necessary.
3. T3 DHW sensor in plate heat exchanger
defective
Replace DHW sensor
4. When using RS100 - Check timer times for DHW program,
if necessary reset
- RS100 does not respond to DHW program
- See RS100 installation instructions
5. 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.
Insuffi cient quantity of
hot water 1. Hot and cold water connection to the
boiler mixed up.
Check left = hot, right = cold
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 Lime scale in plate heat exchanger. If
necessary descale or replace
Temperature drop of the
DHW (Combi) 1. Hot and cold water connection to the
boiler mixed up
Check left = hot, right = cold
2. Flow reducing valve. Check fl ow reducing valve for the correct type
in accordance with the installation instructions
3. DHW power for the boiler is set too low. - Check PARA chapter Step No. 43
- Check the functioning and wiring of the
DHW sensor T3.
15.4 Other Errors