Re: System recommendation for Evo X MR
It is repaired now.
The new input channel reads IAT, EGT or AFR, all based on 0-5V. The signal is then fed AUX trimmer comparator, trip the failsafe if the input exceeds the set level. The same signal is fed to the flow control circuitry to alter flow. This input is on the blue wire of the green harness.
The H4v3 can be used in any one of the older H3 or H4 system.
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Richard L
aquamist technical support
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