Errors

• - select type -
• Alpine Alp080B
• Alpine Alp105B
• Alpine Alp150B
• Alpine Alp210B
• Alpine Alp285B
• ES23
• ES24
• ES25
• ES26
• ES27
• ES28
• ES29
• K2-080-02
• K2-100-02
• K2-120-02
• K2-150-02
• K2-180-02
• MPO-IQ115
• MPO-IQ147
• MPO-IQ189
• MPO-IQ231
• MPO-IQ84
• PVG-3
• PVG-4
• PVG-5
• PVG-6
• PVG-7
• PVG-8
• PVG-9
• Series 202
• Series 202X
• Series 203
• Series 204
• Series 205
• Series 206
• Series 207
• Series 208
• Series 209
• Series 210
• Series 303B
• Series 304B
• Series 305B
• Series 306B
• Series 307B
• Series 308B
• Series 309B

• - select code -
• 1
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 2
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 3
• 4
• 5
• 6
• 7
• 8
• 9

Boiler type K2-180-02

Error code 28

Cause:

Interrupted Airflow Switch Off

Solution:

The air proving switch has failed to close;
-Check switch, check switch connection and wiring.
-Blocked vent, blocked inlet, blocked or disconnected inlet air switch tube, blocked heat exchanger or burner.
-Something is blocking air/flue gas flow through boiler