The Unit Is Turned On (D Led Is Lit) But The Unit Is Not Heating - Daikin ESIE13-02 Service Manual

Troubleshooting
1.2.7 The Unit is Turned on (d LED is lit) but the Unit is not Heating or Cooling as
1
Expected
Applicable models
Error detection
method
Error generating
condition
3
Supposed causes -
corrective action
4
5
Part 4 – Troubleshooting
EHB*CA, EHV*CA, ERHQ011~016*, ERLQ004~016*
Possible causes
The temperature setting is not correct.
The water flow is too low.
The water volume in the installation is too low.
Corrective action
Check the controller set point.
Check that all shut off valves of the water

circuit are completely open.
Check if the water filter needs cleaning.

Make sure there is no air in the system (purge

air).
Check on the manometer that there is

sufficient water pressure. The water pressure
must be >1.5 bar.
Check that the pump speed setting is on the

highest speed.
Make sure that the expansion vessel is not

broken.
Check that the resistance in the water circuit

is not too high for the pump.
Make sure that the water volume in the installa-
tion is above the minimum required value (refer
to the "Specifications" in databook).
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ESIE13-02