Three Way Fridge Ventilation Upgrade
The Parts

Fig.1 70°C thermostat available from Jaycar CAT. NO. ST3833

Fig.2 12v-120mm ball bearing muffin fan available from Jaycar CAT. NO. YX2518

Mounting the Fan

Fig.3 Top vent showing fan mounted using cable ties. Make sure you attach it so that it is blowing out the vent NOT in

Fig.4 Series resistor (27 ohm 5 watt) to slow down the fan speed and polarized plug for easy removal if needed

Positioning the Thermostat

Fig.5 Outside view showing thermostat position is about 3" from the RHS of this pipe adjusted so fan only operates when hot

Fig.6 Close-Up of the thermostat attached with cable ties

Refitting the Top Vent

Fig.7 Replacing the vent showing the fan connection.

Fig.8 Only the cable ties are seen.

Internal Circulation Fan

Fig.9 90mm Internal Fan                                         Fig.10 The '3M' Hooks

NOTE:- This is a smaller fan than the external one (Dick Smith Y-8498) and draws
less current, the reason why the resister is a larger value of 47 ohms.

Wires fed in via the drain hose with the 47 ohm 1 watt resister in series to slow it down.
Attach to the top of the fridge with "3M" brand hooks. It's mounted diagonally to blow
from left to right across the evaporator fins as the LHS on my fridge is the side that
used to ice up. Now its always a constant internal temperature and doesn't ice up at all.
12v to run both fans is available at the back of the fridge but be careful to observe
polarity or fans will not operate.
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