Eemax EX8208T Use and Care Manual
Contents
1. THERMOSTATIC MODELS INSTRUCTIONS FOR TROUBLESHOOTING YOUR EEMAX WATER HEATER Everything you need to know about troubleshooting your Eemax unitis contained in this fully illustrated guide f you stil have problems after reading and carrying out the instructions in this manual hen please call the Eemax technical supportdepartmenton the bl free number below and we will be happy to help PHONE TOLL FREE 800 543 6163 PAGE TWO EX T MODELS indicator ight JA rae UL Rating label Model Order Ref out in Water outletiniet Bottom This Is how your Eemax EX T model should look when mounted correctly on the wall Any other mounting configuration is wrong and the unit will not work Check to see if you have an EX T model on the U L rating label on the front cover of your Eemax unit If the units are mounted correctly and stil do not produce hot water then have a look to see if the indicator light comes on when the hot water faucet is fully opened If the light comes on turn to page 5 If the light does not come on tum to page 3 If the light flashes once very quickly as you turn the water on turn to page 7 PAGE THREE The Indicator light does not come on when the hot water faucet is opened STEP ONE Is the circuit breaker switched on at the breaker panel YES gt Goto Step two No run water at the faucet for a couple of minutes2. before turning on the breaker Turn on breaker STEP TWO af The unt wili not switch on unless enough water is flowing through the heater You wil need a flow rate of at least 0 55 gallons per minute over 1 2 gpm Some models require a higher flow rate see chart below for specific model flow rates Measure the flow rate Take a 1 gallon milk container and using only water from the hot outlet time how long it takes to fil To calculate your flow rate divide the number of gallons your container holds in this case we have one gallon by the time taken to fill the milk container e g If it takes 1 1 2 minutes to fill the container then the flow rate would be 1 divided by 1 1 2 0 66 GPM Open all water valves as much as possible If the indicator light still does not come on then proceed to Step 3 MODEL TYPE ORDER REF SWITCH ON FLOWRATE EX 55T EX 60T EX65T 0 55 GPM EX 75T EX 80T 0 65 GPM EX 95T EX 90T EX 100T 0 75 GPM PAGE FOUR STEP THREE You will require a mutimeter voltmeter to F carry out the next tests 5 hel WARNING TURN OFF THE BREAKER BEFORE PROCEEDING WITH THE NEXT TESTS Set the meter to the single Ohms setting Do not measure continuity this will not work The Ohm symbol The upside down horse shoe Remove the heater cover at the end of the black heater body there are two threaded silver rods with brass nuts on them where the wires
3. go Take a reading of the ohms value between these two rods If the reading is less than 20 ohms on the Rx 1 scale or the Rx 10 scale 5 the element is good if it is much greater e g 10 000 ohms or if you get a reading on the Rx 1K scale then you A must replace the element contact Eemax Tel 1 800 543 6163 for replacement elements Please note down the resistance value if you need to contact Eemax This will be very useful to us PAGE FIVE The Indicator light comes on but there is no heat or the water temperature is low STEP ONE The water flow is too high Reduce the water flow using the faucet with experimentation you should notice an increase in temperature STEP TWO Make sure that the unit is connected to the voltage supply specified on the ULL rating label on the front cover of the heater and no other STEP THREE Take a resistance reading of the element To do this follow instructions on page four STEP FOUR If the light is pulsing and the temperature is too low try turning the temperature adjustment screw on the printed circuit board clockwise Turn the screw very gently the maximum position is approximately 5 O dock At this point the light should stop flashing and should be on continuously Temperature adjustment screw PAGE SIX Other possible solution STEP ONE Make sure the printed circuit board is mounted in the correct
4. position This s the top set of mounting holes see diagram below Failure to mount the board in the correct position will cause element burn out and may cause further damage to your heater This board may have been incorrectly moved when serviced previously The correct mounting holes or the PCB on an EX model Board mounted in correct position inlet iter STEP TWO Inspect the inlet fiter see diagram above for location Make sure it is free from debris pipe dope or anything else which may hinder water flow PAGE SEVEN WARNING TURN OFF THE BREAKER BEFORE PROCEEDING WITH THE NEXT TESTS CHECKING THERMOSTATIC CIRCUIT BOARD If the LED on the circuit board flashes just once very quickly when the water is switched on then 1 Tum offthe power w all units which mayfeed hot water to this unit eg other Eemax pre heating units 2 Ensure that this waterheater is fed only with cold water This unit must not be fed with pre heated water when doing this test 3 There are sixthin leads thatcome off he printed circuit board Remove the third wire from the left coming offthe top of the PCB as indicated below and tape off he end wit insulating tape 4 Run water tom hot water faucet for 30 secs and then switch power onto the heater once more With the water flowing the light comes on steadily then call Eemax and we will replace the printed circuit board Part EX 100 Ifthe ligh
5. t stil does not come on call Eemax and review whatyou have done 3rd wire from left WARNING Do notuse this heater with any wamed water feed ifthe light has come on steadilyhaving performed the above test The heater in this state must only be fed with cold water IF HAVING CARRIED OUT ALL THE TESTS LISTED ABOVE YOUR HEATER IS STILL NOT FUNCTIONING PLEASE CALL THE TECHNICAL SUPPORT LINE AT EEMAX 1 800 543 6163 PLEASE HAVE THE FOLLOWING INFORMATION AVAILABLE 1 ORDER REF NUMBER on U L rating label on the front cover of unit 2 SERIAL NUMBER inside unit on backplate
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