Troubleshooting Guide - Tadiran Telecom AVL-200 Service Manual

SKY

8. TROUBLESHOOTING GUIDE

8.1 General Troubleshooting.
Note: Check for broken wires and loose cable lugs first!
Warning: Always unplug the A/C before performing cleaning or maintenance activities.
Symptom
1 A/C fails to start.
2 Only indoor fan
ventilator works
although cooling or
heating is desired.
Only indoor fan
3
motor and
compressor
working. Outdoor
fan motor stopped.
Probable Cause
1. Power supply to unit not
connected (LCD display is
blank).
2. Fuse Blown ( LCD display
is blank).
3. ON/SEND on R/C has not
been pressed.
4. A/C does not receive
transmitted commands.
5. Electric supply wall socket
is defective.
1. The selected mode is on
Fan Only, or on Cool when
heating is desired.
2. Temperature is set to a
value which is too high (in
Cool mode).
3. Faulty outdoor fan motor or
other fault that cause
compressor overload
protection to cutout.
1. In Heat mode: Head
pressure is too high.
2. In Cool mode: system runs
while evaporator Anti-Ice
routine takes place.
Corrective Action
1. Check for proper connection of power
plugs in wall socket.
Check red LED on RST Controller
(wherever applicable):
If LED is OFF – change RST wires.
If LED is ON – check Phase voltage.
2. Reset automatic circuit breaker or
replace line fuse.
3. Press ON/SEND button on R/C.
4. Make sure that noting blocking the
R/C transmission to the A/C display.
5. Repair or replace wall socket.
1. Check if the R/C is on the desired
mode. If not, select the correct mode
(refer to your User Manual).
2. Observe the temperature setting on
the R/C.
3. See step 3 and/or step 4.
1. Wait up to 90 seconds. Check air flow
through indoor evaporator. Eventually
clean filter.
2. Wait up to 90 seconds until Anti-Ice
routine is completed.
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