380SEC (126.043) V8-3.8L (116.963) (1982)
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Heater Control Valve: Description and Operation
Monovalve With Check Valve, Electric Recirculating Pump, Diagram For Coolant Circuit And Cold Engine Lock
Monovalve (11) controls the coolant flow through heat exchanger. The valve comprises a magnetic valve which is continuously connected to plus via
terminal 15. Opening and closing times are controlled by electronic switching unit for temperature control via minus. If plus and minus are connected the
valve is closed.
The opening or closing time depends on the respective deviation from actual to desired temperature.
During controlled operation, the monovalve opens and closes in a 5-second cycle.
When the engine is shut off (monovalve "open") the check valve (arrow) installed in monovalve makes sure that the heat exchanger is not filled up with
hot coolant.
Layout of monovalve with recirculating pump
11 Monovalve
