Difference between revisions of "Resistor pack"
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| + | [[Image:old and new resistor pack.jpg|thumb|left|Old and new resistor pack. Note corrosion on motor feed.]] | ||
The '''resistor pack''' is a very simple device which allows multiple fan speed settings from the same nominal 12V input. It has three 12V inputs and a single output, which is the motor feed. | The '''resistor pack''' is a very simple device which allows multiple fan speed settings from the same nominal 12V input. It has three 12V inputs and a single output, which is the motor feed. | ||
Revision as of 17:45, 10 January 2009
The resistor pack is a very simple device which allows multiple fan speed settings from the same nominal 12V input. It has three 12V inputs and a single output, which is the motor feed.
Unfortunately due to the position Lotus have located the resister pack it is prone to high corrosion leading to eventual failure. The majority of failures are with the electrical spade connections on the resistor pack and not the internals of the pack itself. Either way it needs to be replaced to restore full fan functionality again.
Any loss of single, multiple or all fan speed controls indicates resistor pack failure. You may loose a single fan speed setting earlier than another, but the most common connection to fail first is the motor feed leading to an abrupt loss of all speeds.
Dealers may suggest this fix requires them to remove S2 front clamshell, but the following guide will show how it's possible to replace the pack through the passenger service panel.
Lotus have released a modification kit which relocates the resistor pack inside the heater matrix, avoiding future corrosion, but this will require the removing the front clamshell.
- Resistor pack part number: A117P6000S
- Modification kit part number: A120P0148S
DIY Replacement via service panel (non a/c only)
Installing Lotus modification kit
