Valdemar V1 Series, Operating Instructions Manual

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Owner Inspection
We recommend that inspections on heat pumps are done frequently, especially after abnormal
weather conditions. The following basic guidelines are suggested for your inspection:
1. Make sure the front of the unit is accessible for future service.
2. Keep the top and surrounding areas of the heat pump clear of all debris.
3. Keep all plants and shrubs trimmed and away from the heat pump especially the area
above the fan.
4. Keep lawn sprinklers from spraying on the heat pump to prevent corrosion and
Error
Code
name description Solution suggestion
1 IPM Over-current IPM Module problem Replace inverter module
2
compressor
synchronous abnormal Compressor failure
Replace compressor
4 reserved -- --
8
compressor output
phase absent
Compressor wiring disconnected
or poor contact
Checking compressor input
circuit
16 DC bus low voltage
Input too low voltage, PFC module
failure,
Inspect the input voltage,
replace module
32
DC bus high voltage Input voltage too high, PFC Module
failure
Replace inverter module
64
Radiator over
temperature
Main unit fan motor failure, air duct
blockage
Inspect fan motor, air duct
128
Radiator temperature
error
Radiator sensor short circuit or
open circuit fault
Replace inverter module
257 communication failure
Inverter module doesn’t receive
order from main controller
Inspect the communication
wiring= between main
controller and inverter module
258 AC Input phase absent Input phase absent (Three phase
module is effective)
Inspection input circuit
260 AC Input over-current
Input three phase imbalance (three
phase module is effective)
Inspection input three phase
phase voltage
264 AC Input low voltage Input low voltage Inspect input voltage
272
Compressor High
pressure failure
Compressor high pressure failure
(reserved)
288
IPM too high
temperature
Main unit fan motor failure, air duct
blocked
Inspect fan motor and air duct
320
Compressor peak
current too high
Compressor line current too high,
the driver program doesn’t match
with compressor
Replace inverter module
384
PFC module
over-temperature
PFC Module too high temperature