Panasonic WH-SXC09D3E5 Service Manual

Also see for WH-SXC09D3E5: Design handbook Operating instructions Operating instructions Operating instructions

Contents

Panasonic WH-SXC09D3E5 Service Manual Manual pdf 68 page image

6815 Maintenance GuideIn order to ensure optimal performance of the unit, checks and inspections on the unit and the field wiring must be carried outregularly. Please request a licensed technician for carry out maintenance job.Before carried out any maintenance or repair work, and removing the front plate of heat exchanger unit, always switch off all powersupply (i.e. indoor unit power supply, heater power supply and sanitary tank power supply).Below checks must be carried out at least once a year.1. Water pressureWater pressure should not lower than 0.05 MPa (with inspects the pressure gauge). If necessary add tap water into boilertank. Refer to boiler tank installation instruction for details on how to add water.2. Pressure relief valve• Check for correction operation of pressure relief valve by turn up the lever to become horizontal. (Refer to figure below)• If you do not hear a clacking sound (due to water drainage), contact your local authorized dealer.• Turn down the lever after checking finish.• In case the water keeps drained out from the unit, switch off the system, and then contact your local authorized dealer.3. Indoor unit control board areaThorough visual inspection of the control board and look for defects, i.e. loose connection, melting of wire insulator and etc.4. RCCB/ELCBEnsure the RCCB/ELCB set to “ON” condition before check RCCB/ELCB.Turn on the power supply to the indoor unit.This testing could only be done when power is supplied to the indoor unit.• Push the “TEST” button on the RCCB/ELCB. The lever would turn down and indicate “0” and indicate green colour if itfunctions normal.• Contact authorized dealer if the RCCB/ELCB malfunction.• Turn off the power supply to the indoor unit.• If RCCB/ELCB functions normal, set the lever to “ON” again after testing finish.5. How to release the trapped air in water circuit• Turn up the lever to become horizontal. (Refer to figure “Pressure relief valve”). The trapped air will be drained out togetherwith water. After few seconds, turn down the lever to stop the water drainage.• Repeat it until the bubbling sound disappear.Becareful not to touch parts other than RCCB/ELCB test button when the power is supplied to Indoor Unit. Else, electrical shockmay happen.