Error codes are designed to help users identify and troubleshoot any issues that may arise with their refrigeration unit.

Please dial 0203 488 1889 to arrange an on-site Call-out or for technical advise!

Here is a comprehensive list of the most commonly encountered error codes and their corresponding descriptions.

Foster error codes:

Error code/ indication	Probable Cause
dEF	Defrost in progress
oFF	Controller in stand-by
cL	Condenser clean warning
do	Door open alarm
hc	Condenser high temperature alarm
t1	Instant probe 1 temperature
t2	Instant probe 2 temperature
t3	Instant probe 3 temperature
th1	Maximum probe 1 temperature recorded
hP	Condenser high pressure alarm
h1	Room high temperature alarm
Lo	Room low temperature alarm
E1	Probe T1 failure
E2	Probe T2 failure
tLo	Minimum probe 1 temperature recorded
cnd	Compressor working weeks
Loc	Keypad state lock