Precat heater controls???

[llanelli-rob]

Hi All,

Need to set my heater to hot to enable me to correctly bleed the cooling system.

My owners manual has the griff 500 heater control description(different set up) mine has the rotary switch for fan and two rocker switches to the right of it!

Would someone please be kind enough to give me a breakdown on the correct operation of these two switches.

Have carried out a search but cannot find the detail required.

Many thanks
Rob

[barreti]

Hi Rob,

From the handbook ...
to do this you refer to a picture with each control labelled from left to right / top to bottom as follows; (A)Rotary switch (B) Top Left Rocker Switch (C) Bottom Left Rocker Switch (D) Alarm thingy (E) Left Rocker Switch (F) Right Rocker Switch. OK here goes..

CENTRE SWITCH PANEL

DEMIST AND TEMPERATURE CONTROLS

Switch B controls the temperature setting. To set the temperature to cold depress the left side of the switch. To set the temperature to hot depress the right hand side of the switch.
Switch C controls the direction of the airflow. To set the flow to the screen depress the left hand side of the switch. To set the flow to the footwells depress the right hand side of the switch.
These controls can be boosted by the three speed fan.

A. THREE SPEED FAN
To operate low speed turn the switch clockwise. Turn the switch clockwise once again for medium speed operation, and once more clockwise for high speed operation. To stop the fan reverse this procedure.
N.B. The fan will only operate whilst the ingition is on.

D. SECURITY SYSTEM ARMED
See section on Security System

E.F. ELECTRIC WINDOW SWITCHES
Switch E operates the left window and switch F the right window. To lower the side window, press the lower half of the switch, maintain the pressure until the desired window height is achieved. To raise the window press the upper half of the switch.


That's it.
Ian

[llanelli-rob]

Ian,

Superb mate,thanks for that appreciate the detail there

Owe you a

Cheers
Rob

[LordGrover]

barreti said:

Hi Rob,

From the handbook ...
to do this you refer to a picture with each control labelled from left to right / top to bottom as follows; (A)Rotary switch (B) Top Left Rocker Switch (C) Bottom Left Rocker Switch (D) Alarm thingy (E) Left Rocker Switch (F) Right Rocker Switch. OK here goes..

CENTRE SWITCH PANEL

DEMIST AND TEMPERATURE CONTROLS

Switch B controls the temperature setting. To set the temperature to cold depress the left side of the switch. To set the temperature to hot depress the right hand side of the switch.
Switch C controls the direction of the airflow. To set the flow to the screen depress the left hand side of the switch. To set the flow to the footwells depress the right hand side of the switch.
These controls can be boosted by the three speed fan.

A. THREE SPEED FAN
To operate low speed turn the switch clockwise. Turn the switch clockwise once again for medium speed operation, and once more clockwise for high speed operation. To stop the fan reverse this procedure.
N.B. The fan will only operate whilst the ingition is on.

D. SECURITY SYSTEM ARMED
See section on Security System

E.F. ELECTRIC WINDOW SWITCHES
Switch E operates the left window and switch F the right window. To lower the side window, press the lower half of the switch, maintain the pressure until the desired window height is achieved. To raise the window press the upper half of the switch.


That's it.
Ian

Do you know whether button B (in particular) is on/off or more clicks equals more heat or cool? Whatever I do I get heat x lots! Not too bad at the mo, but come summer... phew!

[barreti]

clicks? It doesn't click LG, its the same type of switch as the window ones on a precat.

[LordGrover]

Mine do.

[barreti]

go on then. They do the first time you press them so if you press them a lot they will click a lot

Have you tried kneeling by the passenger footwell and having a look at the motors doing their thing when you press the button LG ? The arm driving the valve to open/close can come loose from the motor spindle, so you pressing the button has no effect at all. It can also get out of alignment so you get either warm or hot, but never cold.

[richb]

barreti said:

...The arm driving the valve to open/close can come loose from the motor spindle, so you pressing the button has no effect at all. It can also get out of alignment so you get either warm or hot, but never cold.

[Jay Ayegees]

It clicks when it's at the end of it's travel in one direction.

[350matt]

As mentioned if you pull the passenger footwell cover out of the way so you can see the battery.
Just on top of the battery is the motorised valve which controls the flow of water to the heater matrix, this should move when you press the top rocker.

I forget which way is hot and which is cold but don't forget when driving is that it will take some time for the air rushing past the matrix to cool down the hot water already in the matrix. Even if you've closed the valve you won't be able to tell if its cooler at the vent until the water has had time to cool.

This is why modern cars use an air diversion flap not a water valve.

Matt

[spend]

350matt said:

This is why modern cars use an air diversion flap not a water valve.

Is that the carbon fibre thingy above your head?

[LordGrover]

spend said:

350matt said:

This is why modern cars use an air diversion flap not a water valve.

Is that the carbon fibre thingy above your head?

Nope. That's the baldifier.