Errors

• - select type -
• Challanger Solo CC50s
• Challenger CC85
• Challenger Combi CC105
• Challenger Combi CC125H
• Challenger Solo CC105s
• Challenger Solo CC125Hs
• Challenger Solo CC150s
• Challenger Solo CC85s
• Keystone KS 1000
• Keystone KS 1200
• Keystone KS 399
• Keystone KS 500
• Keystone KS 600
• Keystone KS 750
• Keystone KS 850
• Keystone KW 199
• Keystone Kw 285
• Keystone KW 399
• Keystone KW 500
• Keystone KW 600
• keystone KW 750
• keystone KW 850
• MARQUIS TWH200
• MARQUIS TWH200LP
• Prestige ACVMax 110
• Prestige ACVMax 155
• Prestige ACVMax 175
• Prestige ACVMax 250
• Prestige ACVMax 299
• Prestige ACVMax 399
• Prestige ACVMax Excellence PTE 110
• Prestige ACVMax80
• Prestige Trimax110 Solo
• Prestige Trimax175 Solo
• Prestige Trimax250 Solo
• Prestige Trimax399 Solo
• Prestige Trimax60 Solo

• - select code -
• 50F
• E0
• E1
• E10
• E11
• E12
• E13
• E14
• E16
• E17
• E18
• E19
• E2
• E20
• E21
• E22
• E23
• E24
• E28
• E29
• E30
• E4
• E5
• E6
• E7
• E8

Boiler type Challenger Solo CC105s

Error code E28

Cause:

Temperature too high

Solution:

Air in installation
Pump not running
Insufficient  flow in installation, shut off valves closed, pump setting too low 
Flow switch sticking or miss-installed
Check for wiring