Gasmaster R Series, Installation Manual, Page: 77 / 81

Part 14 - Troubleshooting
Code Description Cause / Solution
01 Lock-out no ignition 9, 10, 11, 26, 27, 28, 29, 30, 32, 44, 47, 76,77
02 Lock-out ionization problem - parasitic flame 29, 31, 32
03 Lock-out high limit temperature protection 5, 6, 8, 16, 17, 18, 19, 33, 34, 35, 39, 42, 43, 72, 73
05 Lock-out Primary temperature too high (>95 ºC) 5, 6, 8, 16, 17, 18, 19, 35, 39, 40, 42, 43, 72, 73
06 40min Lock - Insufficient temp. gradient on supply sensor 5, 6, 8, 16, 39, 41, 42, 43, 51, 54
07 Too long in Legionella mode 45
08 Lock-out Flame lost for 6 times 9, 11, 28, 29, 44, 47, 74, 76
09 Lock-out Gas valve fault 46, 47, 77
15 Lock out Gas valve does not close 46, 47, 77
16 Gas pressure too low 47, 74, 76
20 Water pressure too low 17, 48, 61, 75
21 Water pressure too high 40, 49, 50, 61, 75
25 Supply sensor fault 41, 43
26 Flue gas temperature too high 5, 6, 8, 16, 17, 18, 19, 33, 34, 35, 39, 41, 42, 43
27 Flue gas sensor fault 33, 41, 51, 77
28 DHW sensor fault 23, 41, 77
29 Outdoor sensor fault 41, 52, 53
30 Return temperature sensor fault 41, 54
31 Expansion fault 40, 49, 50, 61
32 Supply temperature too high during DHW operation 5, 8, 16, 17, 18, 19, 34, 35, 39, 41, 42, 43
37 Supply voltage too low 55, 56
40 Fan feedback signal fault 41, 57, 58, 59, 60, 77
41 CH pressure sensor deactivated 75
42 CH pressure sensor fault 41, 61, 75
43 DHW flow sensor fault 41, 62, 63
44 Tank sensor fault 41, 64, 65
46 Code key fault 66, 67
50 Fault during calibration (cause of fault is shown in display of boiler as well) 8, 39, 68
53 Flue gas blockage 59, 69, 70, 71
Table 14.1 Fault codes seen on screen under a
warning triangle
Comfort complaints
Problem Solution
The house is not sufficiently heated although the unit 1, 2, 3, 4, 5, 6, 7, 8
burns.
The ignition makes a lot of noise. 9, 10,11
The room thermostat demands heating, 7, 12, 13, 78
but the burner does not go on.
The unit burns continuously, and the house 7, 12, 14, 15
is heated too much.
During CH operation the boiler makes a lot 5, 8, 16, 17, 72, 73
of noise.
The top of the radiators is insufficiently 8
heated
On hot water demand, the water is cold. 18, 19, 78
On hot water demand, the hot water temperature 16, 18, 19, 24, 25, 26
does not reach 60 ºC.
The hot water temperature is too high. 20, 21, 22, 23
During hot water demand, the boiler makes 5, 8, 16, 17, 26
a lot of noise.
Table 14.2 Trouble shooting list
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