44
IV.
DISPLAY- “TOLR Trip”
TROUBLESHOOTING:
a.
Disconnect the supply to actuator and check whether TOLR is tripped; if yes then
reset TOLR using reset switch as shown in figure D below.
Fig. 6.1: TOLR
b.
Check the continuity between the input and output terminals of TOLR, if there is no
continuity then TOLR is faulty, replace the TOLR.
c.
If TOLR is not tripped and the error message continues then check the TOLR selection
NO/NC under program mode; verify wires with ferrule 95 and 96 coming from J6 on
Power Supply card are connected properly to TOLR‘s respective contacts depending
on NO (Terminals-97, 98) or NC (Terminals-95, 96). Check continuity for these wires
from TOLR terminals to J3 connector of Power Supply card.
d.
If continuity is present but still TOLR trip is showing then check FRC Cable is
connected properly between Power supply card and CPU Card.
e.
If still problem continues then replace CPU and POWER cards.
V.
DISPLAY- “Space Heater fault”
TROUBLESHOOTING:
a.
Check whether Fuse -F4 is blown; If yes, replace with good slow blowing fuse of
150mA, 250V rating.
b.
With the help of multimeter measure the Space heater voltage (ACV) voltage
between black and brown wires of J2 on Power Supply Card (This value will be
220VAC / 110VAC /24VAC depending on the customer requirement). If the
appropriate required voltage is not measured then check the Molex connector
between fuse plate and transformer.
c.
If the required voltage is measured but display continues to show the same error
message then, replace the Power Supply Card. But if the requisite voltage is not
measured then, the fault could be with transformer. Replace with new transformer
and check again.
RESET Switch
RESET
SWITCH
Fig. D: TOLR Trip
