Rinnai R331, User Manual

Page: 19 / 22

When the boiler does not operate properly, check the troubleshooting chart below before
contacting the Rinnai service.
If you smell
gas
If you small
exhaust gas
Ignition
Failure
Noise
The room is
not hot
enough
There is no
hot water.
The hot water
is not hot
enough.
1. Stop the boiler and gas immediately. Open all the windows and doors.
2. Do not try to light any appliances. It may cause an explosion.
3. Contact Gas Supplier.
Periodically check your gas valve using soap bubbles to ensure that there is no
gas leakage.
1. Is the air inlet/exhaust blocked?
2. Is the air inlet/exhaust pipe not
connected or bended? 1. Stop the boiler immediately.
2. Contact the Rinnai service for maintenance.
1. Plug into the outlet with the correct voltage.
2. Check the set temperature and the current temperature.
3. Turn off the boiler and then, turn it on again. If the same
condition is repeated, contact the Rinnai service.
4. Open the gas supply valve.
1. Fasten the screws.
2. Contact the Rinnai service for maintenance.
3. Open the manual air drain point, which is on the upper
side of the allotter, to remove air.
1. Is there power to the boiler?
2. Is the set temperature lower than
the current temperature?
3. Is [11] shown on the display?
4. Is there gas supply to the boiler?
1. Is the boiler well attached to the wall?
2. Is the noise from the air inlet/exhaust pipe?
3. Is the sound of water flowing inside
of the pipes too loud?
1. Adjust the hot water temperature.
2. When the hot water is used for multiple
places at once, the volume of the hot water
would decrease.
3.Adjust the amount of cold water to be mixed.
1. Is the DHW mode on?
2. Is there water Supply to the boiler?
3. Is the water pressure too low?
4. Is the water supply valve not
sufficiently opened?
5. Is the water supply valve for cold
water too opened?
1. Is hot water temp set too low?
2. Is hot water used in seueral place?
3. Is cold water mixed too much?
1. Press the DHW mode button.
2. Wait till the water supply is back, or open the
water supply valve.
3. If the volume of water is 2.3L or less per minute
due to low water pressure, it is not possible to
activate the DHW mode. Request the
installation of a pressure device.
4. Open the water supply valve to reach at least
2.3L per minute.
5. Check the amount of cold water to be mixed.
1. Is the CH mode on?
2. Is the set heating temperature too low?
3. Is the reservation mode/Outgoing mode on?
4. Is the hot water being used?
5. Is the room heating valve of allotter closed?
6. Is the remote controller on?
7. Is the CH return filter blocked?
8. Is air remained on the pipes? 1. Press the CH mode button.
2. Adjust the heating temperature.
3. Adjust the period, or cancel the outgoing mode.
4. CH mode does not operate while hot water is being
used.
5. Open the room heating valve of allotter.
6. Adjust the heating temperature for each room.
7. Clean the CH return filter.
8. Open the manual air drain point, which is on the upper
side of the allotter, to remove air.
Problem What to do Possible Cause
Basic troubleshooting
19