1, Is There Power?
Make sure there is power to the socket or spur you are going to use.
2, UNIT TESTED?
Make sure the unit is working before you install it. Plug in and switch on. Feel the air flow on the outlets and inlets.
3, INSTALLATION WORKING?
Check the installation is right. Is there reasonable air flow?
4, IT WAS WORKING BUT NOW IT STOPPED?
Try leaving to cool, take the plug out of the socket and then plug it back in & switch on
1, Is there Power?
Make sure there is power to the socket or spur that is going to be used.
- Turn the socket switch on where fitted
- Do not put the dehumidifier in a lighting circuit. Only connect to a power circuit else you may experience lights flickering or even an overloading of the lighting circuit.
- Ensure there is a suitable RCD or fuse in the circuit being used to cope with the unit.
- Any electrical spur should be independently fused for full protection. Consult a qualified electrician if in doubt
- A simple method to test the dedicated socket for the dehumidifier is simply plug another portable appliance into that same power socket of similar power consumption e.g. a hair dryer
2, IS the dehumidifier tested?
Ensure the DryFan is working when it comes out of the box and prior to any installation.
Note all our dehumidifiers have been run for 4-8 hours in the factory prior to despatch to ensure 100% are factory working. We appreciate that damage can occur in transport.
Also note that a synthetic odour from the unit will last for around 24 hours of operation
Smaller Dehumidifiers EPD30 / EPD50 / DH800 / DH1200
- Plug in the dehumidifier into the tested socket
- Unplug any external humidistat if one was purchased for the unit
- Push the switch on the front for “Remote Humidistat” to “0” (OFF)
- Rotate the humidistat dial clockwise to the 12 O’clock position
- The dryer you want to make the space, the lower the number you set it to.
- Humans feel comfortable between 55-75% Relative Humidity (RH). It should be noted that achieving humidity levels less than this in domestic environments may take some specialist knowledge.
- Any humidistat will have a 5% tolerance and we accept purpose made electronic humidistats may be more accurate than the scale on the dial of the humidistats on our dehumidifiers and external humidistats.
The Fan & Internal Heater Should Now be Working
Air will be flowing and the small exhaust indicated with purple should get warm 65°C / 150°F (slightly cooler than a typical hair dyer)
- Check that the humidistat is properly working. Turn the humidistat counter clockwise / anti-clockwise fully. You will hear a faint click as the fan and indeed dehumidifier switches off.
- Rotating the dial clockwise again will have the opposite effect. The dehumidifier will switch back on again.
- The point of the “click” is an indication to the relative humidity of the room you are in at that time.
- If the dehumidifier “clicks” only at the extreme (less than 25% of the dial indication it made be an indication that the humidistat is damaged or the temperature inside the unit is too high.
- Firstly allow for the humidity to settle in the environment and try again
- Could the humidity be extremely dry for any particular reason like in a very warm heated room? If so, can it be retested in another room to see if it reacts differently.
- If the humidistat behaves the same in all environments contact your retailer.
- If the exhaust duct is blocked or too long, then hot air will struggle to leave the dehumidifier. Hot internal parts mean that the humidity level inside the unit decreases and the dehumidifier will only switch on when the dial is set to a low humidity despite any another external humidity meter suggesting otherwise. That is because the air it senses and the air humidistat reacts to, is inside the dehumidifier not outside. In this case ensure increasing the exhaust airflow by straighter, shorter or wider ducting.
DH1200 / EPD50 Air Flows
Since no water is produced in a DryFan how can you tell it is actually working?
- The same fan creates 3 air flows. One inlet (Blue) and two outlets (Purple & Green).
- The purple air flow should feel quite warm but is only 15% of the air flow of the green air flow. This ratio of air flows needs always to be maintained. If the fan is working the ratio will always be like this without any ducting added no matter what.
TIP: Try to remember the feeling of the air flowing against your hand from each outlet and the temperature. This will help to check any installation later using ducting.
TIP Keep the exhaust duct short as possible and extend the processed air duct if needed. Move the dehumidifier location if needed. Having a long exhaust can mean cause a “Choking of the Exhaust”. Extending the exhaust duct will have more of a negative impact on the performance of the machine than extending the dry air duct.
- As a final check, shine a flashlight / torch through the metal grill through the green grill main outlet while the unit is working and observe (The EPD30 / DH800 does not have a the round exhaust flange fitted). This will allow you to see internally the unit working.
- Look closely and you will see a black textured wheel inside near the metal grill moving in a slow circular motion. Around 1 revolution per three minute interval which looks very slow to the eye. If it is not moving at all contact your retailer.
1 Wheel Revolution per 3 Minutes
If All Is Good, Your DryFan is Working 100%
Set to Zero. This is not the power on switch. It is a switch to swap from internal to external humidistat control
Turn clockwise to increase dryness. Turn all the way clockwise for constant dehumidifying. All the way anti clockwise to turn the dehumidifier off.
DH800 / EPD30 Rear Outlet
DH1200 / EPD50 Rear View
3, IS the INSTALLATION GOOD?
Ensure the DryFan is working and you have followed the instructions on how to set the unit on the links on the left.
A small dehumidifier can dry a large warehouse given enough time and the right conditions. Likewise the largest dehumidifier will struggle to dry a swimming pool in a short time. Every home and situation is different. More people create more moisture needing a larger unit. A larger home will also need a larger unit or more than one unit may be required. To understand more see here
It is important to understand that every time air flows through the DryFan it is dried around 30% and does not dry the air 100% dry. Therefore, air must be allowed to cycle through the dehumidifier over and over to get the best drying effect.
Adequate and proportional air flow is needed. See the installation pages. If ducting prevents adequate air flow through the exhaust or through the process air then the system is not balanced.
Do not forget very few rooms are air tight. Often the air is completely changed every 1.5 to 2.5 hours even in a modern home. Any dehumidifier will need to dry all the incoming air plus the moisture produced in the room. If you calculate the volume of the room then the volume of air processed by the dehumidifier, you will get an understanding for the size of the dehumidifier needed or if more than one dehumidifier is required.
Check the air flow of the exhaust with and without ducting to ensure they are similar. Less total air flow or not enough air flow from either Purple or Green vents will means less dehumidification performance.
Temperatures in °C
4, IT WAS WORKING BUT NOW IT STOPPED?
1, You have tested the unit on arrival, set the unit up and it has been working but now it has stopped
- Turn the humidistat on the unit fully clockwise to the ON position. The room may have got dryer and the humidity level needed reached so the dehumidifier has automatically stopped working.
- If fitted, remove any external humidistat. Push the external humidistat switch to OFF and turn the humidistat fully clockwise. If it works then the external humidistat is at fault
Smaller dehumidifiers sold after May 2020 need manual reset. These would include EPD30, EPD50, EPD50-MAX, DH800 & DH1200
2, Smaller models sold after May 2020 have a special feature. If the unit overheats the units will cut out for a manual restart. A manual restart means that you need to take out the plug from the wall socket completely and then reinsert the plug back into the tested wall socket and then restart.
Overheating is where the internal air chamber of the dehumidifier reaches 85°C / 185°F. The reason for overheating can be:-
- Air Filter blocked or needs cleaning
- Ducting too long or restricted too much
- The unit is insulated too much. Some heat is radiated through the case of the dehumidifier
- Ambient air temperature is too high
- Air temperature in attics, vehicles, boats or under rain covers exposed to direct sunlight can reach surprisingly high temperatures
- A combination of the above factors.
Larger dehumidifiers EPD200, EPD150, EPD200 RESTO, EPD300 RESTO, DH2500 & DH3500 that overheated have manual reset button that needs pressing to reset. The cover needs to be removed by a qualified person to do this. See user manual.
3, It was drying but seems to have stopped removing water
After a period of use humidity seems to be increasing more
- Turn the humidistat clockwise to increase the drying period
- Ensure the air filter is clean
- Has the humidity increased in the room due to weather or more humidity being produced in the room?
- Check that it is in full working order following point (2)
The exhaust duct is cooling the water vapour. Decline the duct or insulate the exhaust duct. See installation page for more info.
The higher the number on the dial, the more humid you making the room.
Therefore, for a humid setting (High RH%) turn the dial more clockwise.For a dryer room turn the dial counter clockwise.Turn dial fully counter clockwise for on all the time and fully clockwise for off setting.
No because there is no water produced. To understand the general principle see the movie.
In some ways DryFan gives an impression of a common kitchen extractor fan in reverse. They of course work completely differently. Air from the dehumidifier is not 100% dry (0% RH). Air that passes through is 30% dryer. Therefore, taking air from outside the room may have the opposite desired effect. For instance, if we have a living space at 80% relative humidity (RH) but want the room to be 60% RH.
Assume it is about to rain and the air outside 95% RH. Taking air from outside may be dried to only to 70% RH. However, what is in room may also be creating moisture may be over 70% humidity and the target will never be reached.
The way to dry is process and dry the air in the space as many times as possible to get a compound effect in drying not just one pass.
A dehumidifier has to dry all the air in a space. Garages tend to leak air around the doors a lot and of course when the door is opened . Therefore, if the wind blows, the air in the garage will change frequently and it will need to be dried over and over. The net affect may be zero as more air enters then is being processed. Seal up holes and even the doors if needed to restrict the air changes in the garage space.
The dehumidifier is working. The issue is either the efficiency of the installation, too much outside air is entering the space or the dehumidifier is too small to cope with the humidity problem.
Relook at the installation guide page and follow the examples closely.
Any space will have moisture in the surroundings. In the floors, walls or furnishings. It will take time for these to dry and the humidity problem to come under control. Typically a home will take 2 weeks with the right dehumidifier to dry out to a reasonable level where moisture can be controlled easily.
Any DryFan or any dehumidifier in genral will not give instantly dry air. It must cycle over and over air to reduce the humidity. It is therefore not possible to take air from outside, dry it through the dehumidifier and get totally dry air inside. Outside humidity also varies. Each time air passes through the DryFan it gets around 30% dryer.
A bad application. Here, the barrel contents are trying to be dried but it is not drying. There is no air allowed in the barrel to make up for the wet air exhausted. One solution is simply to put another hole in the barrel to allow some air in to replace that or use a 4-hole system. To learn more see here.
View the Dehumidifier Videos
Sometime we may skip parts of the video but try watching it all the way through this time