Amana VXC20 Series, Installation & Service Reference

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POSSIBLE REFRIGERANT LEAK!
T
O AVOID A POSSIBLE REFRIGERANT LEAK
,
OPEN THE SERVICE VALVES
UNTIL THE TOP OF THE STEM IS
1/8”
FROM THE RETAINER
.
CAUTION
E
NSURE VALVES ARE OPEN AND ADDITIONAL CHARGE IS ADDED PER
CHART BEFORE APPLYING POWER
.
CAUTION
When opening valves with retainers, open each valve
only until the top of the stem is 1/8” from the retainer. To
avoid loss of refrigerant, DO NOT apply pressure to the
retainer. When opening valves without a retainer, remove
service valve cap and insert a hex wrench into the valve
stem and back out the stem by turning the hex wrench
counterclockwise. Open the valve until it contacts the rolled
lip of the valve body.
After the refrigerant charge has bled into the system,
open the liquid service valve. The service valve cap is
the secondary seal for the valves and must be properly
tightened to prevent leaks. Make sure cap is clean and
apply refrigerant oil to threads and sealing surface on
inside of cap. Tighten cap finger-tight and then tighten
additional 1/6 of a turn to properly seat the sealing
surfaces.
Do not introduce liquid refrigerant from the cylinder into the
crankcase of the compressor (suction side) as this may
damage the compressor.
Break vacuum by fully opening liquid and gas base valve.
NOTE. Units may utilize ball valves or front
seating valves. These are not back-seating valves.
It is not necessary to force the stem tightly
against the rolled lip.
NOTE: The following table lists the eqivalent
length gained from adding bends to the suction
line. Properly size the suction line to minimize
capacity loss.
Step 3. System Start-up Test
NOTICE
On initial power start-up, the outdoor unit will display code
E11, signaling that initial SYSTEM test must be run. Follow
the instructions below to initiate and complete the testing.
A system verification test is now required to check the
equipment settings and functionality.
Inverter units are tested by any of the following methods:
• Setting the “SUt” menu (System verification test)
to ON through the indoor unit control board push
buttons.
• Setting the System verification test menu of mode
display screen-4 to ON through the outdoor unit
control board push buttons.
• Through the CoolCloud HVAC phone application
Once selected, it checks the equipment for approximately 5
- 15 minutes. System test may exceed 15 minutes if there
is an error. Refer to the Troubleshooting section.
NOTICE
Before starting the SYSTEM TEST, turn off the electric
heater or gas furnace.
COOLCLOUD™ HVAC PHONE
APPLICATION
The CoolCloud HVAC phone application was designed
to improve the contractor’s setup /diagnostic experience.
This application can only be used with ComfortBridge
compatible indoor units and can be downloaded through
the Google Play or Apple App Store.
Users can see specific model information, review active
diagnostic error codes, observe system status during
operation, make system menu adjustments, add site visit
notes and run system testing of all operational modes (heat
/ cool / fan) directly from the phone.
If installing with a CTK04 thermostat, please see the
addendum for further instructions.