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4.2 Storage and Freeze Protection

There are two issues to consider when the Phoenix DryMAX 

is stored between uses and both pertain to water trapped 

in the unit.  The first is biological growth and the second is 

damage caused by freezing. The effects of the trapped water 

can be greatly reduced if precautions are taken to remove 

as much as possible before storage.
1.   Use the pump PURGE button to reduce the water level in 

the reservoir.

2.   Stretch the hose flat to drain it completely. Raise one 

end above your head and spool hose while draining 

water out the other end.

3.   To reduce biological growth flush the unit with a 

bio-fungicide that is approved for use with copper, 

aluminum and polyethylene. To flush:
a.  Run the hose to a drain.
b.  Plug in the unit but do not turn it on.
c.  Remove the air filter. Slowly pour a quart of the 

antimicrobial through the heat exchanger

d.  Hold in the pump purge switch to reduce the water 

level in the reservoir.

e.  Flush with water.

4.   If the unit will be exposed to freezing temperatures, 

after purging, pull back the filter and pour 1 cup (8oz) 

of a propylene glycol based anti-freeze through the heat 

exchanger. It will flow down into the pump reservoir. Do 

NOT purge the solution out of the unit.

5.   Dirty filters should be changed prior to long term 

storage to prevent biological growth on the filter. 

5 Service

WARNING: Servicing the Phoenix DryMAX with its high 
pressure refrigerant system and high voltage circuitry 
presents a health hazard which could result in death, 
serious bodily injury, and/or property damage. Only 
qualified service people should service this unit. 
CAUTION: Do not operate unit without the top cover in 
place.

CAUTION: Do not operate unit without the top cover in 
place. 

5.1 Technical Description

The Phoenix DryMAX uses a refrigeration system similar 

to an air conditioner’s to remove moisture from incoming 

air and to add heat to the air that is discharged. Hot, high 

pressure refrigerant gas is routed from the compressor 

to the condenser coil. The refrigerant is cooled and 

condensed by giving up its heat to the air that is about to 

be discharged from the unit. The refrigerant liquid then 

passes through a filter/drier and capillary tubing which 

cause the refrigerant pressure and temperature to drop. It 

next enters the evaporator coil where it absorbs heat from 

the incoming air and evaporates. The evaporator operates 

in a flooded condition, which means that all the evaporator 

tubes contain liquid refrigerant during normal operation. A 

flooded evaporator should maintain constant pressure and 

temperature across the entire coil, from inlet to outlet. The 

mixture of gas and liquid refrigerant enter the compressor 

after leaving the evaporator coil. The compressor evacuates 

the cool refrigerant gas from the accumulator and 

compresses it to a high pressure and temperature to repeat 

the process. 

5.2 Troubleshooting

No dehumidification, control does not light up and unit will 

not turn on from power button.

 

1.  Unit unplugged or no power to outlet 
2.  Defective control board 
3.  Loose connection in internal wiring 

Some dehumidification, air mover runs continuously but 

compressor only runs sporadically.

 

1.  Unit is in defrost cycle, DEFROST light on 
2.  Defrost thermistor defective or loose 
3.  Loose connection in compressor circuit 
4.  Defective compressor overload 
5.  Defective compressor 
6.  Defective control board 
7.  Upper housing is not sealed to lower housing 
No dehumidification, air mover runs but compressor does 

not.

 

1.  Bad connection in compressor circuit 
2.  Safety float switch closed, check pump reservoir 
3.  Defective compressor capacitor 
4.  Defective compressor overload 
5.  Defective compressor 
6.  Defective control board 

Air mover does not run. Compressor runs briefly but cycles 

on and off.

 

1.  Loose connection in blower circuit 
2.  Obstruction prevents impeller rotation 
3.  Defective air mover 

Summary of Contents for Therma-Stor DryMAX 4036150

Page 1: ...asy to determine power to the unit The Phoenix DryMAX is 6 smaller than the closest dehumidifier and yet it still has an integrated handle and wheels as well as onboard storage for the power cord and condensate hose The all new Phoenix Micro Channel condenser allows us to pack so much performance into such a small dehumidifier The feedback on the stacking of the AirMax was so positive we made sure...

Page 2: ...ng The Phoenix DryMAX features a high impact roto molded housing which protects the unit It is recommended the units are properly secured for transport The Phoenix DryMAX must always be on its base when transported by vehicle It may be tipped upright to utilize its handle and back for loading and moving by hand Read the operation and maintenance instructions carefully before using this unit Proper...

Page 3: ...the key to scroll through available values 3 3 4 Purging Press the button to purge the machine The display will communicate to the user that the machine is purging on the fourth line of the dashboard and show a 20 second countdown timer This will momentarily replace grain depression until the machine has finished purging The display will also communicate to the user that the machine is auto purgin...

Page 4: ... to confirm selection and advance to the next screen Light Bar On The light bar colors and animations will persist while in Settings 3 3 9 Humidistat Fan Mode Press the Set button to toggle the Humidistat Fan mode from Always On to Auto Press the Next button to confirm selection and advance to the next screen Light Bar On The light bar colors and animations will persist while in Settings 3 3 10 Hu...

Page 5: ...out of unit 3 3 14 Language The display will greet the user in order to help them identify the language settings for the machine Press the Set button to browse available languages Press the Next button to confirm selection and advance to the next screen Light Bar On The light bar colors and animations will persist while in Settings 3 3 15 About This Device The following information is displayed on...

Page 6: ...gnostic Mode Refrig Test The display will communicate to the user the following information during a Refrigeration Test Inlet Temperature and RH Grains Outlet Temperature and RH Grains Hours Life hours only Evaporator Coil Temperature Countdown timer 20 minutes Once the 20 minute countdown timer has expired the display will automatically advance to show the refrigeration test results The display w...

Page 7: ...urn the dehumidifier on The unit will begin the Powering Up sequence and you will see this screen Press and hold the button to turn the dehumidifier off The dehumidifier will go through a powering down cycle The default shut down time is three minutes plus 20 seconds for a final purge The shutdown time can be changed be scrolling through the menu to this screen IMPORTANT Unplugging the unit withou...

Page 8: ...ystem similar to an air conditioner s to remove moisture from incoming air and to add heat to the air that is discharged Hot high pressure refrigerant gas is routed from the compressor to the condenser coil The refrigerant is cooled and condensed by giving up its heat to the air that is about to be discharged from the unit The refrigerant liquid then passes through a filter drier and capillary tub...

Page 9: ...top To replace the thermistor probe 1 Unplug the dehumidifier 2 Remove the top housing 3 Pull thermistor probe up and out of evaporator coil 4 Remove control board cover 5 Unthread thermistor probe wire from harness 6 Unplug thermistor probe connector on control board 7 Reassemble thermistor probe and dehumidifier using the above procedure in reverse 5 5 Condensate Pump The internal condensate pum...

Page 10: ... RED 3 YEL 2 BRN 9 BLK 11 BRN BLK BLK 13 BLK 5 BLK BLOWER BLU GRN BLK 4 BLK 13 BLK 5 RH IN RH OUT AUX EVAP FLOAT TEMP RH SENSOR TEMP RH SENSOR PRESS SWITCH THERMISTOR PROBE 1 2 3 4 5 6 LINE NEU WHT 10 WHT 6 WHT 12 WHT 6 WHT 10 WHT FLOAT SWITCH PUMP BLK CORD WHT CORD P N 4036955 CONTROL BOARD POWER BOARD COMPRESSOR CAPACITOR ...

Page 11: ...036943 Handle Bushing RH 4037847 Handle Bracket RH 4024916 Condensate Hose 4036942 Handle Weldment 4036944 Handle Bushing LH 4037848 Handle Bracket LH 4036927 Filter Support 4038477 Filter 4036962 01 Upper Housing Red 4036962 02 Upper Housing Blue Granite 4036961 01 Lower Housing Black 4038478 Impeller 4036928 Exhaust Grill 4037048 Duct Ring 4036935 Rubber Wheel 4036936 Wheel Axle Not Pictured 403...

Page 12: ...ot cover any defect malfunction etc resulting from misuse abuse lack of normal care corrosion freezing tampering modification unauthorized or improper repair or installation accident acts of nature or any other cause beyond Therma Stor LLC s reasonable control Limitation and Exclusions If any Phoenix DryMAX Dehumidifier part is repaired or replaced the new part shall be warranted for only the rema...

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