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(307IO) MODEL HP3220 HEAT PUMP ENGLISH 7.5” X 10.3” PANTONE 295U 10/10/2017
English
307
IO
SAVE THESE INSTRUCTIONS
English
Page 20
SERVICE BY QUALIFIED TECHNICIANS (continued)
LED Display Error Code
ERROR CODE
SHOWN ON LED
DISPLAY
CAUSE
SOLUTION
• Low pressure protection
• Check for refrigerant gas leakage, see “Refrigerant Gas
Pressure Verification” section. Refill as needed.
• Ambient air temperature is lower than the minimum
operating air temperature range, wait until ambient air
temperature rises.
• Switch off unit for few minutes and switch on again,
check if: a) fan is not running, replace damaged fan
motor. b) fan is running, then make sure adequate air
circulation, see “Location and Space Requirement”
section.
• Check low pressure sensor connection.
• Low pressure sensor broken, replace it.
• Terminal block for low pressure connection on PCB
broken, replace PCB.
• No water flow or low water flow
• Verify if water inlet and outlet hoses/pipes are connected
correctly.
• Ensure pool inlet and outlet cover grid is clean and free
from obstructions.
• Check if filtration pump is working.
• Clean or replace the cartridge or sand media if necessary.
• Check bypass valves setting.
• Keep the pool water properly sanitized.
• Water flow sensor broken, replace it.
• Check flow sensor connection.
• Water flow volume not enough,
water pressure difference is too low.
• Verify if water inlet and outlet hoses/pipes are connected
correctly.
• Ensure pool inlet and outlet cover grid is clean and free
from obstructions.
• Check if filtration pump is working.
• Clean or replace the cartridge or sand media if necessary.
• Check bypass valves setting.
• Keep the pool water properly sanitized.
• Communication failure
• Check electrical connection between control unit panel
and main PCB. Replace control unit panel.
• Check control wire connection.
• PCB terminal connection block broken, replace PCB.