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Training manual CLAS X
8 ERROR CODES.
8.1
BOILER PROTECTION SYSTEMS.
There are two types of errors for malfunctions:
- Shutdown (solved by resetting);
- Safety stop (No Reset: the boiler will start working again properly when the cause is removed).
There is a third type of error code that is used to indicate a malfunction that does not stop the boiler which
continues to work properly (Indication).
8.1.1
Error code
The error codes are divided in seven different functional units, in other words the first figure indicates which
functional unit of the boiler is involved in the error:
1. Primary circuit;
2. Sanitary circuit;
3. Electronic PCB;
4. Communication with peripherals;
5. Ignition and detection;
6. Air inlet / Fume outlet.
7. Zones
Display
1 01
1 02
1 03
1 04
1 05
1 06
1 07
1 08
1 09
1 10
1 11
1 12
1 14
1 16
1 P1
1 P2
1 P3
1 P4
Description
PRIMARY CIRCUIT
Overheat
Heating proportional pressure short circuit or open
circuit
Circulation or presence of water:
Gradient Tman > 7°C/sec for 3 times
Circulation or presence of water:
Gradient Tman > 20°C/sec or Gradient Trit > 20°C/sec
Circulation or presence of water:
Tman – Trit> 55°C for 3 times
Circulation or presence of water:
Trit > Tman + 10°C for 3 times
Circulation or presence of water:
Trit > Tman + 30°C
Water missing on the primary circuit (P<Pmin) for
boiler with minimum pressure switch on/off (par.247=1)
High primary circuit pressure (P>3bar)
Heating delivery probe open or short circuit (NTC1)
Water missing on the primary circuit (P<Pmin) for
boiler with pressure sensor (par. 247=2)
Heating return probe open or short circuit (NTC2)
Outdoor probe open or short circuit
Floor thermostat opened
Circulation or presence of water:
Gradient Tman > 7°C/sec
Circulation or presence of water:
Tman – Trit> 55°C
Circulation or presence of water:
Trit > Tman + 10°C
Low primary circuit pressure(P<P
): fill up
SIGNALLING
Ripristino
Reset
No Reset
Reset
Reset
Reset
Reset
Reset
No Reset
No Reset
No Reset
No Reset
No Reset
No Reset
No Reset
Warning
Warning
Warning
Warning
Pag. 65 di 69
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