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Dewhot NDCT16DH, Instructions Manual

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Dewhot NDCT16DH Instructions Manual Download Page 25

Page 25 of 30

Dewhot 

| Gas geyser manual

Dewhot 

| Gas geyser manual

Code

Error

Solution  

EA

Open circuit of input 
water temperature 
sensor

Check whether the wire of input water 
temp. sensor is pulled off, burnt or 
damaged;

Change the input water temperature sensor

EB

One of the 2 CPUs 
of the controller is 
damaged

Change the loom to gas valve 

Change the loom to LCD

Change the LCD screen

Change the controller

EE

Controller 
malfunction

 Change the controller

LED 

FLASH

The batteries are flat
 

Change the batteries

PA

BA

6A

Low battery

 Change batteries

Summary of Contents for NDCT16DH

Page 1: ...16lt Constant Temperature...

Page 2: ......

Page 3: ...ier immediately Burn back In the event of a burn back where the flame burns back to the jet immediately turn the gas supply off at the gas cylinder After ensuring the flame is extinguished wait for I...

Page 4: ...Page 4 of 30 Dewhot Gas geyser manual Parts Diagram LCD screen Controller box LCD screen Pilot assembly Pilot jet Gas valve Battery Box Pilot tube Burner Washer Burner Jet Bar Test Point...

Page 5: ...Page 5 of 30 Dewhot Gas geyser manual Outlet Temp sensor 850 C Temp sensor 1100 C Temp sensor Cover Chimney box Inlet water valve Water flow sensor Inlet Temperature sensor Radiator...

Page 6: ...meters Description Constant temperature Model no NDCT16DH Model Type D Gas type LPG Max gas pressure 2 8kpa Rated input 32kw Water pressure 20 500 kPa Maximum Water Flow 16L min Max Gas Consumption 2...

Page 7: ...SERS Use this gas geyser in conjuction with our solar to gas valve to boost your solar water temperature in the winter months or colder cloudier summer days FLAME OUT SENSOR This is designed to automa...

Page 8: ...and energy savings need to be considered when setting the water temperature Water temperatures above 52 C can cause severe burns Refer to page 16 1 Households with small children disabled or elderly...

Page 9: ...witch 4 Evacuate the house immediately with your family and pets 5 Leave the doors open for ventilation and contact the gas supplier registered LP Gas Installer or Fire Department 6 Stay away from the...

Page 10: ...in a place that allows for easy access for future servicing and replacing batteries Use at least 8mm concrete plugs and screws to mount the gas geyser to the wall In the case of dry walling use dry wa...

Page 11: ...1 For long pipe runs water pressure can drop and additional water pressure may be required 2 When the water is supplied from a water tank the height of the tank the diameter of the pipes and their rel...

Page 12: ...e gas geyser for service and draining purposes Installation of demountables is recommended on the hot and cold water lines so that the gas geyser may easily be disconnected for servicing Install a non...

Page 13: ...appliance If such flammables must be used open doors and windows for ventilation 5 Appliances in the vicinity should be shut off to avoid vapours igniting from the gas burner Flammable vapours can be...

Page 14: ...nder and any gas shut off valves installed on the gas line There may be an air lock inside the gas line especially for gas piping which is longer than three to five meters To get rid of this airlock y...

Page 15: ...f the gas geyser in the event of a hot water leakage the geyser will not turn on The body of the gas geyser can get hot during operatuon do not touch any part of the gas geyser except for the control...

Page 16: ...aximum water temperatures are reached The water temperature is determined by turning on a hot water tap Water temperatures at the tap will vary depending on the weather and length of piping from the g...

Page 17: ...with your hand before use and remember that hotter water settings increase the risk of injury The gas geyser is fitted with a device that will shut off the gas supply to the burner if the appliance ex...

Page 18: ...filters should be cleaned once a year 5 Perform regular maintenance on the geyser to prevent carbon monoxide dangers excessive hot water temperatures or other potentially hazardous conditions DO NOT 1...

Page 19: ...brush and rinse it with running water Put the filter back and screw it in Turn on the second the cold water supply CAUTION Cleaning of the main burner should always be performed by Registered LPG Ins...

Page 20: ...time Unit fires continuously without a flame coming on or showing an error Faulty controller Faint firing and PA BA or 6A comes up on the screen Flat batteries The geyser flame comes on and runs up t...

Page 21: ...section is faulty check the first and second stage solenoids with a voltmeter Unit suddenly goes cold during use Batteries may be flat Regulator is delivering too high a gas pressure unit shuts off h...

Page 22: ...t operation of the appliance again IF THE ERROR CODE IS STILL SHOWN Turn off the hot water tap and turn off the switch on the LCD Take note of the error code displayed and call the Dewhot Technical Se...

Page 23: ...agm valve or controller E1 No flame signal detected within 60s on the pilot flame No flame signal detected within 10s on the main burner Check the gas inlet pressure is operating at 2 8 kPa Check whet...

Page 24: ...r Change the outlet temp sensor Change the diaphragm valve or controller E7 The gas flow is unstable and has switched off 5 times continuously It is normal if it is the first time operation or the app...

Page 25: ...is pulled off burnt or damaged Change the input water temperature sensor EB One of the 2 CPUs of the controller is damaged Change the loom to gas valve Change the loom to LCD Change the LCD screen Cha...

Page 26: ...operational and safety briefing Before you sign off the installation make sure you also receive your COC Installer This appliance may only be installed by a LPG Installer registered with the South Af...

Page 27: ...Page 27 of 30 Dewhot Gas geyser manual...

Page 28: ...Page 28 of 30 Dewhot Gas geyser manual www dewhot com...

Page 29: ...www dewhot com...

Page 30: ...16lt Constant Temperature...

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