Modern gas boilers are equipped with control sensors. Also, this system is called protective automation. Sensors are triggered in case of malfunctions, blocking the operation of equipment. They do not miss serious problems and breakdowns. To unlock the work, find out the error value of the Ariston boiler. After removing the cause of the blockage, the equipment will restore heating.
Heating equipment manufactured by Ariston is widely known abroad and in Russia. The brand has gained its popularity due to a large range of models, a variety of pricing policies, reliability and quality.
The boilers are presented in single-circuit and double-circuit designs. The former work only for heating, the latter for heating and hot water supply (DHW). Combustion chambers open and closed. According to the installation method, there are mounted and floor options. Therefore, both a resident of a private house and the owner of a small apartment will be able to choose a suitable unit for themselves.
The self-diagnosis system allows you to quickly understand the reasons for stopping work. Error codes are conditionally divided into two types: they are eliminated by the user on their own or require contacting a service center.
The device does not work, but the code is on the display? You will find all the values uXNUMXbuXNUMXbfor the Ariston models in the table below. But first, restart the technique to rule out a system failure. To do this, press the “Reset” key.
- Gas supply valve.
- Installation of a coaxial chimney. Clear the pipe of debris, adjust the pipe location.
Error 501 No ignition.
- Open the gas supply valve.
- Examine the ionization sensor. Strip its contacts when oxidized. The sensor should be at a distance of 8 mm from the comb.
- Tighten the electrode and control module connections.
607 Fan relay contacts stuck. Install a new relay. 101 Overtemperature protection has tripped. What to do:
- Adjust the gas supply. Perhaps the pressure on the valve is increased.
- Clear the clogged filter.
- Check heat exchanger. The formation of scale leads to a decrease in pressure and poor heat transfer. Remove the assembly and flush the coil with reagents.
- Run pump diagnostics. Adjust its speed.
- Check temperature sensor and electronic board.
Defective parts must be replaced.
102 Heating system NTC thermistor has failed. Diagnose the thermistor for a short circuit (short circuit) or open circuit. Also ring the terminals of the main module. A voltage of 0 or 5 volts leads to a similar error. Replace the module. Errors 103, 104, 105, 106, 107 Overheating. The pressure drops, the coolant level is reduced. How to proceed:
- Bleed air from the system. For this, some models have a special button. In Egis Plus 24, press mode for a few seconds. In Ariston Uno and Mathis, press Reset. After that, make sure that the pressure is restored – 1–1,2 bar.
See also solution for 101.
Error 108 The pressure in the circuit has decreased. Inspect the system for leaks:
- pipes, connections, radiators;
- heat exchanger;
- expansion tank.
Leaks are sealed. If possible, repair the heat exchanger by soldering. If damage is severe, replace. In the expansion tank, inspect the membrane, install a serviceable one. If the tank itself is leaking, connect a new product.
Error 109 The pressure is too high (more than 3 bar).
- When increasing the values on the pressure gauge, use Mayevsky taps. They are located on each radiator to remove air from the system.
- Inspect the secondary heat exchanger. Damage to it can lead to a mixture of cold and hot fluid, causing pressure to rise. Then replace the node with a good one.
110 Heating thermistor broken. Carry out diagnostics for short circuit and open circuit. Install a new part. 111 The code is typical for boilers with automatic heating medium replenishment. Its meaning and repair are similar to 108. 112 The temperature sensor on the return line gives incorrect readings. Diagnose the sensor, wiring. Replace defective element. 114 The connection to the bypass thermistor is broken. Inspect and tighten the wires to the connectors. 116 There is no contact with the external temperature sensor. 117 Poor water circulation. Reboot. 201 Short circuit or sensor break at the DHW supply. Check wiring, circuit, connections. Tighten the contacts, replace or clean the oxidized areas. 302 No communication with display and electronics. Repair the control unit. Elimination is the same as the instructions for 201. 303, 304 Breakdown of the electronic board. Install a new part. 307, 308 Problems with the electronic module. To resolve the situation, hold the “Reset” key. 601 No traction. How to troubleshoot:
- To check, bring a lit match to the control window. If the flame deviates to the side, there is thrust. If it burns steadily – no.
- Clean the chimney shaft of soot and debris. Condensation may accumulate in coaxial pipes.
- Examine the thrust sensor. Make sure it is correct.
604 (yellow light on) Incorrect fan operation. The boiler does not turn on. Run diagnostics for fan rotation, Hall sensor, board. Connect the correct elements. A01 (for models with electronic ignition) Problems with ignition. Heating does not start.
- Measure the voltage in the network. If failures are frequently observed, connect a stabilizer.
- Reverse the plug in the socket.
- Examine the ionization sensor. Strip its contacts, make sure it is in the correct location.
E34 The pneumatic relay is out of order. Connect the work piece. sp2 Re-ignition failed. Open the fuel valve more. Run diagnostics:
- ionization sensor;
- gas valve;
- chimney.
Clean and replace defective parts.
6p1, 6p2 Insufficient air enters the room with the boiler or smoke is poorly removed. Clean the ventilation, open the window. Check the chimney. Inspect the relay connections. If they are stuck, replace. 608 The fan operates normally, but the pressure switch does not respond. Inspect and replace pressure switch or repair wiring. H45 No hot water outlet or problem with thermistor. Diagnose the flow sensor, thermistor, safety valve. Clean parts, make repairs.
Those models that do not have a display indicate problems by flashing indicators on the panel.
Now you understand why the red light or other indicators are on. Let’s dwell on the frequent restart of equipment. Why is this happening? Check if the “Comfort” mode is on. In such cases, the boiler automatically turns on and off, adjusting to the mode.