Daikin DRG0361DL00001S, Инструкция по эксплуатации

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48
SERVICING
S-3C Heating Anticipator
The heating anticipator is a wire-wound adjustable heater,
which is energized during the “ON” cycle to help prevent
overheating of the conditioned space.
The anticipator is a part of the thermostat and if it should
fail for any reason, the thermostat must be replaced. See
the following for recommended heater anticipator setting.
To determine the proper setting, use an ammeter to
measure the current on the “W” wire going to the
thermostat.
Use an amprobe as shown below. Wrap 10 turns of
thermostat wire around the stationary jaw of the amprobe
and divide the reading by 10.
10 TURNS OF
THERMOSTAT WIRE
(From "W" on thermostat)
STATIONARY JAW
OF AMPROBE
READS 4 AMPS
CURRENT DRAW
WOULD BE .4 AMPS
Checking Heat Anticipator Amp Draw
S-4 Checking Transformer And control circuit
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal injury
or death.
A step-down transformer (either 208-240, 460 or 575 volt
primary to 24 volt secondary) is provided with each unit.
This allows ample capacity for use with resistance heaters.
WARNING
Disconnect ALL power before servicing.
1. Remove control panel cover to gain access to
transformer.
With power ON:
WARNING
Line Voltage now present.
2. Using a voltmeter, check voltage across secondary
voltage side of transformer (R to C).
3. No voltage indicates faulty transformer, bad wiring, or
bad splices.
4. Check transformer primary voltage at incoming line
voltage connections and/or splices.
5. If line voltage available at primary voltage side of
transformer and wiring and splices good, transformer
is inoperative. Replace.
S-7 Checking Contactor And/Or Relays
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal injury
or death.
The compressor contactor and other relay holding coils
are wired into the low or line voltage circuits. When the
control circuit is energized, the coil pulls in the normally
open contacts or opens the normally closed contacts.
When the coil is de-energized, springs return the contacts
to their normal position.
NOTE: Most single phase contactors break only one side
of the line (L1), leaving 115 volts to ground present at
most internal components.
1. Remove the leads from the holding coil.
2. Using an ohmmeter, test across the coil terminals.
If the coil does not test continuous, replace the relay or
contactor.