EMI CAHV09, Инструкция по установке, эксплуатации и обслуживанию

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• Does system have proper refrigerant charge? System
low on refrigerant can cause air handlers freeze-up. To
check system charge you need to contact a qualifi ed
refrigeration service technician. Refrigerant charge
information can be found in the Installation, Operation
and Maintenance Manual for outdoor condensing unit.
(S1CV/S1HV Family)
Q: Condenser will not start although indoor unit appears
normal. What should I do?
A: At indoor control, verify control is in cooling and
setpoint temperature is below room temperature. Use
Voltmeter, check for 24VDC across 24VDC(-) and SC
wires. If 24VDC is present check for wiring breaks or
improper connections between indoor and outdoor
units.
A: Manual reset high-pressure switch is located on high
side of system on back panel above service valves. To
reset, push red button in. If switch was tripped there
will be click when it resets.
A: Cassette air handlers are equipped with internal
condensate pump with high level safety switch. If
condensate reaches critical level or if power is lost to
indoor unit, safety circuit opens and low Volt power
to condenser is removed. Check condensate pump
for obstruction. Condensate pump assembly can be
removed through side access panel. Inspect drain
pan to determine if condensate is not being removed
properly from unit, after removal condensate pump.
Inspect all drain lines to insure there is no blockage
preventing condensate removal.
Q: How long will fan run?
A: While unit is in cooling or heating and auto fan mode
is selected, fan cycles with call for cooling or heating.
Room temperature reaches setpoint temperature,
heat/cool call is dropped, fan stays on for additional
60 seconds to purge unit of residual energy. Placing
fan selection switch on wall mounted thermostat or
hand held remote in High, Medium, or Low position will
cause fan to run continuously regardless of set point
temperature.
Q: What causes my indoor unit to freeze-up?
A: Air handler freeze up usually a symptom of another
problem. Cassette air handler is equipped with freeze
protection to prevent freeze up from occurring. If
freeze up does occur then check following.
• Check freeze sensor is inserted fully and snug in
coil fi ns. If it is not another location may need to be
selected. Take care not to insert sensor directly into coil
tube. Insert sensor between two tubes.
• Check indoor air fi lter. Should be clean and free of
dirt. Dirty fi lter reduces airfl ow and effi ciency. Check
coil is clean. If coil is dirty it should be cleaned using
appropriate coil cleaner or mild detergent.
• Equipment operating in cooling mode when outdoor
temperatures are below 32°F (2°C)? If yes, condenser
should be fi tted with low ambient control so proper
system pressures are maintained.
FREQUENTLY ASKED QUESTIONS
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