Emelson SL Series - System Error Codes; Error Code E7, F0-F7

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temperature sensor it may be disconnected.
E7 Selection switch error ◎
Controller board error
F0 Start-up power error ◎
Turn off water then start-up power
F1 Hi Limit thermostat
open
◎
Controller board error
F2 Gas Valve driver circuit
error
◎
Controller board error
F3 The power of Gas
Valve error
◎
Controller board error
F4 Main Valve control
circuit error
◎
Controller board error
F5 Proportional Valve
driver circuit error
◎
Controller board error
F6 AD converter error ◎
Controller board error
F7 Setting Switch error ◎
Controller board error