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3
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Troubleshooting
Service manual
84
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
Possible failure
Root cause
Check
Repair
Domestic hot water tank
leakage.
Component failure.
Check tank visually for
leakages.
Repair leakages. If NOT
possible, complete unit has
to be replaced.
Air Purge leakage.
Component failure.
Check air purge valve for
leakages.
Replace air purge valve.
3.4.6 Symptom: Water flow or volume too low
1
If this symptom is determined, check the steps in error codes 7H‑xx to solve
the error. See
"3.3 Error based troubleshooting"
19].
3.4.7 Compressor related
Symptom: Compressor does not start
Root cause category: software control
Possible failure
Root cause
Check
Repair
Compressor does NOT
start because water loop
temperature is too low.
Special software control
activated - Water loop
temperature is too low
causing ONLY the backup
heater to operate.
Compressor will start when
water temperature is high
enough (for detailed water
temperature values, see
the operation range in the
databook).
Normal unit operation – no
specific countermeasure
required.
—
Compressor guard timer
active.
Compressor guard timer
active. Once compressor
has stopped it takes
180 seconds before it can
restart.
Normal unit operation – no
specific countermeasure
required.
—
Root cause category: component – electrical
Possible failure
Root cause
Check
Repair
Power cables (U, V, W)
incorrectly connected to
compressor.
Wrong assembly during
repair.
Confirm that the U, V, W
wiring is correctly
connected. See
indication how to connect
correctly.
Correct the U, V, W wiring.
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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