Martin Lishman Ltd. Registered in England & Wales no. 3793534. Registered office: Albion House 32, Pinchbeck Road, Spalding, Lincs., PE11 1QD
Fault Finding
WARNING
– Risk of Electrocution
Electrical fault findings can sometimes require coming into contact with potentially exposed electrical
conductors. This must be carried out by a competent electrician.
Make sure that the mains power is isolated before removing the front control cover.
Electrical maintenance only to be undertaken by qualified persons.
The fan and heater and humidifier are fused separately inside the isolator panel.
All fuses must be replaced with the same type of rating.
The controller contains safety thermal trips which reset automatically.
FUSES
FUSE SIZE AND TYPE
FUSE LOCATION
MAINS FUSE (F1)
Cartridge 5A 5 x 25mm
UK Mains plug
HUMIDIFIER FUSE (F2)
Cartridge 2A 5x20mm
Isolator Enclosure
HEATER FUSE (F3)
Cartridge 2A 5x20mm
Isolator Enclosure
FAN FUSE (F4)
Cartridge 400mA 5x20mm
Isolator Enclosure
The Hot Box will not switch on
Check the plug is fully inserted in the socket and that it is switched on.
Check the socket has power.
Check the main 5A Fuse in the plug.
The Hot Box is not warming up
Check if any heat is coming from the heater brass heat sink after a few minutes of running.
DO NOT
TOUCH THE HEATER DIRECTLY IT COULD BE VERY HOT.
Isolate the Hot Box from the power supply and remove the controller enclosure front panel. Check the
2A heater fuse.
The humidifier is not working (no red LED light on the humidifier)
Check the water level covers the top of the humidifier.
Check the water level sensor underneath the black square is not clogged with mineral deposits.
Clean with vinegar and a brush.
Isolate the Hot Box from the power supply and remove the controller enclosure front panel. Check the
2A humidifier fuse
.
The humidifier is not working (Red LED on but little or no mist)
Clean the humidifier with vinegar soak and a brush to remove mineral deposits.
Replace the humidifier ceramic membrane. A kit can be obtained from Martin Lishman Ltd.
Replacing the humidifier’s ceramic membrane
Lifespan depends on a number of factors including operating time, water hardness, water purity etc.
Disconnect the power pack from the power supply and remove the fogger from the water.
Remove any residue on the fogger using water and vinegar, ideally by soaking the device for about
30 minutes.
Make sure the fogger is completely dry before unscrewing the ring with the key.
Using the membrane key, insert the key into the ring nut and turn counter-clockwise.
Remove the brass washer and the membrane. The rubber washer is best left in place. Clean
chemical or mineral deposits on the ring nut and the brass washer with a soft cloth and install the new
membrane, the black ringside facing down, in the reverse order of the above.
The inside area of the unit cavity must be completely dry before the parts are installed.
IMPORTANT!
There is a front and back of the membrane.
The fan is not working
Check the fan fuse
.
Make sure the power is isolated and check that the fan blades rotate freely.
