Symptom: Water Flow Or Volume Too Low; Compressor Related - Daikin altherma 3 M Service Manual

Possible failure
Domestic hot water tank
leakage.
Air Purge leakage.

2.4.6 Symptom: Water flow or volume too low

2.4.7 Compressor related

Symptom: Compressor does not start
Possible failure
Compressor does NOT
start because water loop
temperature is too low.
Compressor guard timer
active.
Possible failure
Power cables (U, V, W)
incorrectly connected to
compressor.
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Root cause
Component failure.
Component failure.
1 If this symptom is determined, check the steps in error codes 7H‑xx to solve
the error. See "2.3 Error based
Root cause category: software control
Root cause
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).
Compressor guard timer
active. Once compressor
has stopped it takes
180 seconds before it can
restart.
Root cause category: component – electrical
Root cause
Wrong assembly during
repair.
Check
Check tank visually for
leakages.
Check air purge valve for
leakages.
troubleshooting" [
Check
Normal unit operation – no
specific countermeasure
required.
Normal unit operation – no
specific countermeasure
required.
Check
Confirm that the U, V, W
wiring is correctly
connected. See "6.2 Wiring
4
diagram" [ 314] for an
indication how to connect
correctly.
2 Troubleshooting
|
Repair
Repair leakages. If NOT
possible, complete unit has
to be replaced.
Replace air purge valve.
4
11].
Repair
—
—
Repair
Correct the U, V, W wiring.
Service manual
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