Operational Test (Short Term Testing Only); Checking Electric Heater Assembly (On Models So Equipped) - Amana RS4100004 Service

Testing Procedures
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and
discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require
power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or
operational.

Operational Test (short term testing only)

If compressor voltage, capacitor, overload, and motor
winding tests are successful (do not indicate a fault),
perform the following test:
1. Disconnect power to unit.
2. Discharge capacitor by shorting capacitor terminals
through a 10,000 ohm resistor.
3. Remove leads from compressor terminals.
4. Attach test cord to compressor windings.
· Common lead on test cord attaches to C terminal
on compressor.
· Start lead on test cord attaches to S terminal on
compressor.
· Run lead on test cord attaches to M terminal on
compressor.
To AC supply
Switch
Fuses
Attaching Capacitor for Compressor Test
5. Connect a known good capacitor into circuit as
shown above. For proper capacitor size and rating,
see Technical Sheet for unit under test.
NOTE: Ensure test cord cables and fuses meet
specifications for unit under test (see Technical
Sheet for unit under test).
RS4100004 Rev. 0
!
Compressor
C S
M
Capacitor
WARNING
6. Replace compressor protector cover securely.
7. Plug test cord into outlet, then press and release start
cord switch.
To avoid damage to compressor windings,
immediately disconnect (unplug) test cord from
power source if compressor does not start. Damage
to compressor windings occurs if windings remain
energized when compressor is not running.
If compressor runs when direct wired, it is working
properly. Malfunction is elsewhere in system.
If compressor does not start when direct wired, recover
system at high side. After system is recovered, repeat
compressor direct wire test.
If compressor runs after system is recovered (but would
not operate when wired direct before recovery) a
restriction in sealed system is indicated.
If motor does not run when wired direct after recovery,
replace faulty compressor.
Checking Electric Heater Assembly (on
models so equipped)
1. Disconnect power to unit.
2. Ensure heater element is cold, then remove suspect
heater and visually inspect element for obvious
damage (breaks, cracks in element, etc.). Replace if
faulty.
3. Attach ohmmeter to element leads. Check for
continuity (14.4 ohms cold).
If element reads open (infinite or very high resistance):
4. Remove fuse links and test for continuity. Top fuse
link, nearest the thermostat, opens at 305°F. Bottom
fuse link opens at 200°F. If either or both are open,
replace.
5. Use ohmmeter to check disc type thermostat for
proper operation:
· Heat thermostat to 125°F ±5°. Thermostat should
read open.
· Cool thermostat to 100°F ±4°. Thermostat should
read closed (continuity).
Replace thermostat if faulty.
24
!
CAUTION