Troubleshooting - Pioneer WYD009AL3JAR-L Service Manual

Pioneer Brand, WYD Series 13 SEER Ductless Split System Heat Pump Engineering and Service Manual
Note: Please read the entire installation manual packed with the unit carefully and follow all instructions, during
and after the installation. Your system has been fully tested and ran properly for a sufficient amount of time at
the assembly line before it was approved and packed for shipment. All functions and components were verified
to be in perfect working condition. Therefore a majority of problems and deficiencies are usually due to causes
other than a factory defect. See below for some common problems, reasons and solutions. Call us for any other
issues that cannot be resolved for further assistance by our engineering support. We can only help, if you are
able to describe the symptoms properly and able to measure and advise us certain measurements such as
voltages, temperatures and pressures on the system.
Symptom : E1 Error display on the indoor unit.
Reason : Indoor Unit's Room Temperature Sensor Open or Shorted Circuit.
Solution : Check for resistance. If measuring as open or shorted, replace the indoor unit's room
temperature sensor (in front of the coil).
Symptom : E2 Error display on the indoor unit.
Reason : Indoor Unit's Heat Exchanger Temperature Sensor Open or Shorted Circuit.
Solution : Check for resistance. If measuring as open or shorted, replace the indoor unit's coil
temperature sensor (on the coil header).
Symptom : E6 Error display on the indoor unit.
Reason : Indoor Unit's Motor Speed is out of range. Rough Shipment Handling or Damaged Motor.
Solution : Check for misaligned blower wheel, rubbing and vibration at the fan mechanism. Align the
blower wheel in its cavity properly, so it spins freely without any effort. Check the blower bearing on the left
side of the blower to assure it is sitting properly in its cavity. Check the motor mounts to assure motor is
properly mounted. If the blower is spinning freely and E6 code is still displayed, change the fan motor. If this
does not resolve the problem, change the indoor unit's controller card.
Symptom : HEAT Mode is missing on the remote control screen. Remote skips the heat mode.
Reason : Remote controller was erroneously setup as cooling only.
Solution : Reset the remote controller. Remove and reinsert the batteries. Do not touch any buttons until
all flashing stops and the screen appears fully.
Symptom : Indoor unit lights are on and seems to work, but outdoor unit does not run at all.
Reason : Pair of the power wires running between the indoor and outdoor unit are inverted.
Solution : For 115V Models, assure BLUE wire is attached to the N terminal on both the indoor and
outdoor sections. Likewise, assure the BROWN wire is attached to the L terminal on both the indoor and
outdoor sections. For 230V Models, assure BLUE wire is attached to the L2 terminal on both the indoor and
outdoor sections. Likewise, assure the BROWN wire is attached to the L1 terminal on both the indoor and
outdoor sections. Swapping the wires attached at these 2 terminals at the indoor unit should resolve the
problem. Otherwise check for continuity for all wires used in your installation for broken links.
Symptom : In HEAT Mode, outdoor compressor runs but the outdoor fan does not run.
Reason : System is in Defrost Mode or missing wire connection.
Solution : Check if the outdoor coil is iced up and the defrost mode gets terminated within maximum 10
minutes. Otherwise, assure that the RED wire is attached to terminal #2 on the outdoor unit. Also check that the
same red wire is either connected to the #2 terminal on the indoor unit (009, 012, 018 models) or the white plug
at the end of the cable at the indoor side is plugged with the matching white plug on the indoor unit properly
(for 024 models only). Check for voltage between #2 and N terminals on 115V models and assure it reads 115V
or check between #2 and L2 terminals on 230V models and assure it reads 230V(at the outdoor unit's terminal
block).