Test Operation; Troubleshooting Guide - York YOCC-YOHC 12-60 Installation & Owner's Manual

DC Inverter R-410A
P Q (E)
For 36000-60000 Btu/h
Maximum Piping Lengths
Unit size 09 12
D (m) 12 15
L (m) 15 18
H (m) 10 12
Note : Where the difference in elevation between the indoor unit and the outdoor unit is greater than
5 meters, install an oil trap every 5 meters.
The suction line must have a 2% gradient up to the compressor on horizontal
sections.
Where piping lengths are unusually long and include a large number of oil
traps, it may be necessary to adjust to compressor charge.
Refrigerant charge to be added per extra metre of piping length when
more than 7.5 meters.
Unit size 07 09 12
g/m 15 15 15
CHECK THIS ITEM BEFORE START OPERATION
Outdoor
Check the fl are nut connections, valve stem cap connections and service cap
connections for gas leak with a leak detector or soap water.
Problem
A. The air conditioner does not
run.
B. The outdoor fan runs but the
compressor will not start.
C. There is insuffi cient heating or
cooling.
D. The compressor run
continuously.
E. The compressor starts but
shuts down quickly.
F. Clicking sound is heard from
the air conditioner.
INDOOR UNIT
L1 L2 L3 N
Y/G
3-core sheild cable
Power supply
3-Phase
380-415V~ (5-core cable 5x2.5mm 2 )
Power supply
1-Phase
2
220-240V~ (3-core cable 3x2.5mm )
18 25 35 45
15 22 22 26
18 25 25 30
12 20 20 24
18 25 35 45
40 40 40 60 60

TROUBLESHOOTING GUIDE

Probable cause
1. Power Failure.
2. Fuse blown or circuit breaker open.
3. Voltage is too low.
4. Faulty contactor or relay.
5. Electrical connections loose.
6. Thermostat adjustment too low (in heating mode) or too high
(in cooling mode).
7. Faulty Capacitor.
8. Incorrect wiring, terminal loose.
9. Pressure switch tripped.
1. Motor winding cut or grounded.
2. Faulty Capacitor.
1. There is a gas leak.
2. Liquid and gas line insulated together.
3. The room was probably very hot (cool) when you started the system.
1. Thermostat adjustment too low (in heating mode) or too high
(in cooling mode).
2. Faulty fan.
3. Refrigerant charge too low, leak.
4. Air or incondensables in refrigerant circuit.
1. Too much or too little refrigerant.
2. Faulty compressor.
3. Air or incondensables in refrigerant circuit.
4. Changeover valve damaged or blocked open (heat pump unit).
In heating or cooling operation any plastic parts may expand or shrink due to
a sudden temperature change in this event, a clicking sound may occur.
L
H
Low Pressure
55 65
26 26
30 30
24 24
Pressure Tap
This unit is shipped complete with a charge of R-22/R-407C refrigerant that will
be suffi cient for an interconnecting piping length of 7.5 meters.
55 65
60

TEST OPERATION

Indoor
• Check the unit is fi rmly fi xed.
• Check the connecting pipes are tighten securely.
• Check the pipe insulation.
• Check the drainage.
• Check the connection of the grounding wire.
Refrigerant Piping
POWER
TIMER COMP
EMERGENCY SWITCH
Connections (FLARE
Connections)
To avoid alteration of unit capacities,
check that piping lengths and changes in
D
elevation are kept to a strict minimum.
Before connection the refrigerant lines,
follow the procedures below (if precharged
connection lines are not supplied):
– Select copper pipe diameters according
to the size of unit to be installed.
– Install the refrigeration lines, checking
L
that no foreign bodies get inside the
piping.
POWER
TIMER
COMP
EMERGENCY SWITCH
– Install the fl are connectors and fl are the
ends of the pipes.
High Pressure
Outdoor
Manifold
Gas Valve
Liquid Valve
Remedy
1. Wait for Power resume.
2. Replace the fuse or reset the breaker.
3. Find the cause and fi x it.
4. Replace the faulty component.
5. Retighten the connection.
6. Check Thermostat setting.
7. Find the cause then replace Capacitor.
8. Check and retighten.
9. Find the cause before reset.
1. Check the wiring and the compressor winding resistance.
2. Find the cause then replace Capacitor.
1. Remove charge, repair, evacuate and recharge.
2. Insulate them separately.
3. Wait while unit has enough time to cool the room.
1. Check Thermostat setting.
2. Check condenser air circulation.
3. Find leak, repair and recharge.
4. Remove charge, evacuate and recharge.
1. Remove charge, evacuate and recharge.
2. Determine the cause and replace compressor.
3. Remove charge, evacuate and recharge.
4. Replace it.
In heating or cooling operation any plastic parts may expand
or shrink due to a sudden temperature change in this event,
a clicking sound may occur.
Indoor
Unit Unit
Gas Line
Liquid Line
R-22/R-407C