Maintenance Schedule - Daikin ESIE13-02 Service Manual

Maintenance Schedule

1 Maintenance Schedule
1
1.1 Maintenance
Introduction
Precaution
3
Overview
6
Part 6 – Maintenance
In order to ensure optimal availability of the unit, a number of checks and inspections on the unit and
the field wiring have to be carried out at regular intervals.
Before carrying out any maintenance or repair activity, always switch off the circuit breaker on the

supply panel, remove the fuses or open the protection devices of the unit.
Make sure that before starting any maintenance or repair activity, also the power supply to the

outdoor unit is switched off.
The described checks must be executed at least once a year.
1 Water pressure
Check if the water pressure in the hydro-box is above 1.5 bar. If necessary add water.
2 Water filter
Clean the water filter.
3 Water pressure relief valve
Check for correct operation of the pressure relief valve by turning the red knob on the valve
counter-clockwise:
If you do not hear a clacking sound, contact your local Daikin dealer.

In case the water keeps running out of the unit, close both the water inlet and outlet shut-off

valves first and then contact your local Daikin dealer.
4 Pressure relief valve hose
Check that the pressure relief valve hose is positioned appropriately to drain the water.
If the (optional) drain pan kit is installed, make sure that the pressure relief valve hose end is
positioned in the drain pan.
5 Backup heater vessel insulation cover
Check that the backup heater insulation cover is fastened tightly around the backup heater vessel.
6 Domestic hot water tank pressure relief valve (field supply)
Applies only to installations with a domestic hot water tank.
Check for correct operation of the pressure relief valve on the domestic hot water tank.
7 Domestic hot water tank booster heater
Applies only to installations with a domestic hot water tank.
It is advisable to remove lime buildup on the booster heater to extend its life span, especially in
regions with hard water. To do so, drain the domestic hot water tank, remove the booster heater
from the domestic hot water tank and immerse in a bucket (or similar) with lime-removing product
for 24 hours.
8 Hydro-box switch box
Carry out a thorough visual inspection of the switch box and look for obvious defects such as

loose connections or defective wiring.
Check for correct operation of contactors K1M, K2M, K3M, K5M (applications with domestic hot

water tank only) and K4M by use of an ohmmeter. All contacts of these contactors must be in
open position.
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ESIE13-02