Troubleshooting Guide - Tadiran Telecom ANL-100 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
A/C fails to start.
1
Only indoor fan
2
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 (POWER LED
Off).
2. Fuse Blown (POWER LED
Off).
3. ON/SEND has not been
pressed.
4. A/C does not receive
transmitted commands.
5. Electric supply wall socket
is defective.
6. AUTO-OFF-REMOTE
switch is set to Off.
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:
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, or
use the AUTO 3-position slide switch
for automatic constant 22ºC Set Point
(when R/C is not available).
4. Make sure that noting blocking the
R/C transmission to the A/C display.
5. Repair or replace wall socket.
6. Slide the 3-position switch on the
display to REMOTE (RMOT) position.
1. Check if the R/C is on the desired
mode. If not, select the correct mode
(refer to your User Manual). Also note
that each 15 min. (max), the
compressor will be switch on for 3
min. (at least).
2. Observe the temperature setting on
the R/C. Also note that each 15 min.
(max), the compressor will be switch
on for 3 min. (at least).
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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