Technical data

Instructions Manual cod. 1592001120
1592001121 Universal-R3 GB 19.11.2004.doc
rel. 1.0
Pa. 15 / 15
22. FAULT FINDING
Problem Possible reason Notes
Display flashing HA
• Temperature too high • Check cooling system
• Check alarm settings
Display flashing LA
• Temperature too low • Check cooling system
• Check alarm settings
Display flashing P1
• Fault with thermostat
probe.
• Wrong type of probe fitted
(NTC/PTC)
• Check probe connections and resistance
value
• Change probe type or alter parameter PbC
Display flashing P2
• Fault with evaporator
probe
• Wrong type of probe fitted
(NTC/PTC)
• Parameter tC has been
set to 4 or 5 with no
evaporator probe fitted
• Check probe connections and resistance
value
• Change probe type or alter parameter PbC
• Fit evaporator probe or alter parameter tC
Display flashing EE Data corruption Check for electrical spikes and interference. Fit
filters DIXL930 & DIXL932
Ensure probe cables are separated from power
cables.
Re-check all parameter settings
Replace controller if still not working.
Display flashing dA Door has been left open too
long
Shut the door
Display flashing EA A non serious external alarm
has been detected by the digital
input
Trace and rectify the external problem
Display flashing BAL A serious external alarm has
been detected by the digital
input
Trace and rectify the external problem
Buttons will not work Buttons have been locked
Unlock buttons by pressing both
& buttons
until display flashes “POn”
Parameter cannot be
adjusted over it’s full
range
Some other parameter is
conflicting and preventing
further adjustment
Check other parameter settings
Power on but no output
operates
Small LED’s flashing
Anti short cycle in progress,
relays being held off until it
expires.
Wait or adjust parameters AC or OdS
Evaporator fan short
cycling
Parameter FSt set too low Adjust FSt to a higher setting. During
commissioning, set it above ambient until pull down
is complete, then re-set to a more suitable
temperature.
Dixell S.p.A. Z.I. Via dell’Industria, 27
32010 Pieve d’Alpago (BL) ITALY
tel. +39 - 0437 - 98 33 - fax +39 - 0437 - 98 93 13