T_DEFROST Error is displaying on Edel Cylinder. What does this mean?

If T_Defrost error is displayed on the cylinder on its own accord, then the cylinder is indicating that the evaporator temperature sensor appears to be misreading. 

This will require a service visit to resolve.

It is recommended that parts below as taken:

 X-B4993072 (temp probe 10kOhm 900mm) 

 X-B1244096 Main PCB

This applies to the Edel 170, 200 & 270 cylinders.

The “lightning flash” symbol should appear on screen automatically if the hot water needs to be heated using the immersion, without selecting “elec mode” for the backup. If this does not occur:

To switch on the backup immersion, search on knowledge base “My Edel hot water cylinder has stopped heating the water. How do I get hot water via backup?”

Note if you have your Edel set as a language other than English the error may display as - 

SOND E DEG (French)

T_FR OST (German) 

SOND.SBRIN (Italian) 

TEMP.ODMRA (Polish) 

T_ON TDOOI (Dutch) 

T_EV AP_ER (Spanish) 

T_OD MRAZ (Slovakian)

T_OD MRZ (Slovene) 

T_OD MRAZ (Czech) 

TD_OD MRZ (Croatian) 

SOND T.GE (Portuguese) 

SENS T AVRI  (Norwegian) 

TFA GYVED (Hungarian) 

TEMP.SHKRI (Albanian) 

TEMP.DEFRO (Serbian) 

See help guide regarding setting of language -


Require additional help? Please follow link below


Applicable Models:

EDL170-520, EDL170-520RF, EDL200UK-630, EDL200UK-630RF, EDL270UK-630, EDL270UK-630RF

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