Control Unit SG 1577 24v,
Please note 24v only,
This product is no longer in stock
Kit to replace the control unit heater Thermo90S
Replacement kits include:
Caution: Replacement kits can only be used for Thermo90S
The control unit and cable harness adapter are designed to be replaced in standard heaters.
When replacing, pay attention to the color-coded connectors!
Note : the wiring harnesses for the cabin heater and fuel pump remain the same.
If the installation of the control unit is not possible in the standard position, the mounting position can be changed with the help of a clamp and seal.
Seal must be replaced. The mounting position of the Thermo90ST control unit can be any. The position presented performs the protection type 6K9K.
The cap is designed for external control of the circulating pump. External control of the circulating pump via the control unit is not possible. To connect an external control of the circulating pump, the plug is turned on instead of the pump connector into the control unit (connector X4). In this case, the pump can be controlled by an external source. Diagnostic polling in the control unit is disabled.
Attention : the external control of the circulating pump must be chosen in such a way that the pump will function during the whole time of the heater operation, including during the purge period. Electrical connections must be leak tight.