DFRIGO User Manual |
Document subject to change without prior notice.
48
Δ 18
Solid state relay SSR
operation thermostat.
Overheating of the SSR
due to inadequate
ventilation. Dissipating
fins obstructed, failure
of the M4 motor or
another obstruction.
Check that the M4 motor is
running normally. Check the
ventilation of the relay by the
dissipating fins and the M4 motor.
To deactivate the alarm press
Δ 19
Contacts or
temperature probe
BT1
Electro-mechanical
fault of the contacts FK1
and FK2 or maximum
reactivation
temperature exceeded
(110ºC).
Check the contacts are working.
Check the reactivation air flow is
working correctly to dissipate air.
Δ 114
PLR modules
Problem
with
the
communication and/or
connection of the PLR
modules.
Check the part and connection
pins among the modules Check
the power to modules.
Δ 115
Fault in PLR outlets
Q1 to Q4
Short-circuit or overload
in PLR Q outlet.
Check the components connected
to the outlet or replace the unit.
Δ 116
Fault in PLR outlets
Q5 to Q8
Short-circuit or overload
in PLR Q outlet.
Check the components connected
to the outlet or replace the unit.
Δ 26
Solid-state relay
SSR2 of the post-
heating battery
SSR2
relay
not
available.
Check the circuit protection of the
relay F2
