47
Matters to be confirmed before reporting of failure
When there is a problem in the boiler, check the following matters before requesting
a service.
Self-diagnostic
indication
Matters to be confirmed
Measures
1. Immediately stop using the boiler.
2. Contact the installer to request inspection or repair.
1. Tighten the wall fixing screws to prevent shaking.
2. Contact the installer to request inspection or repair.
3. Open the manual air drain cork installed on top of
distributor in each room to drain air out of heating
pipes.
1. Insert the power cord.
2. Check setting temperature and current temperature.
3. Turn the boiler off and then turn it on. If the same
symptom is repeated, contact our service center.
4. Open the intermediate gas valve or replace to a new
one in case of LP gas.
1. Turn heating on using heating power button.
2. Appropriately adjust heating temperature.
3. Reduce timer or cancel outing mode.
4. Heating cannot be done while using hot water.
5. Open valve in each room.
6. Adjust temperature in each room when room
control is used.
7. Clean the heating filter. (Refer to page 18)
8. Open the manual air drain cork installed on top of
distributor in each room to drain air out of heating
pipes.
1. Turn hot water on using hot water power button.
2. Wait until water is supplied or open the water s
upply valve.
3. When water pressure is low and flow of water is
less than 2.3l per minute with the faucet fully
turned on, hot water cannot be used. Request
installation of a pressure device.
4. Adjust the faucet to flow of 2.3l per minute.
5. Adjust the amount of cold and hot water mixed.
1. Configure hot water temperature as high.
2. The amount of hot water is reduced when it is
used in many places at the same time.
3. Reduce the amount of cold water.
1. Is air supply / exhaust hole blocked?
2. Is air supply or exhaust system
disconnected or bent?
1. Is the power cord connected?
2. Is setting temperature lower than current
temperature?
3. Does [11] appear on the liquid crystal
display?
4. Is gas supplied properly?
1. Is the boiler attached properly to a wall?
2. Is the noise caused by vibration of air
supply or exhaust system?
3. Is the sound of water flowing inside pipes
large?
1. Is heating turned on?
2. Is heating temperature too low?
3. Is timer or outing function set?
4. Is hot water in use?
5. Is valve of each room closed?
6. Is controller of each room turned off?
7. Is the heating filter blocked?
8. Is there any air remaining in pipes?
1. Is hot water turned on?
2. Is there water outage or is water supply
valve closed?
3. Is water flow low because of low water
pressure?
4. Is the faucet opened too little?
5. Is the faucet leaned too much to cold
water side when mixing cold and hot water?
1. Is hot water temperature setting low?
2. Is hot water being used in many places
at the same time?
3. Is the amount of cold water too much?
There is a
gas smell.
There is a smell
of exhaust gas.
Gas cannot
be ignited
Abnormal
noise is created.
Room does not
get hot.
Hot water does
not come out.
Hot water
temperature is
too low.
1. Immediately stop using gas, close the intermediate gas valve, and open all windows and doors for
ventilation.
2. Never use flames like matches and lighters, indoor light switches or electronic devices as spark can
cause explosion.
3. Contact the gas supplier.
- Regularly perform soap test on gas pipe to check leakage of gas.
