Daikin DP14HM Installation Manual

14
Unit Model # 5 8 10 15 20
DP14[H or C]M2441** M
(F)
M
(F)
M
(F)
HNA
DP14[H or C]M3041** M
(F)
M
(F)
M
(F)
HNA
DP14[H or C]M3641** MMH
(F)
H
(F)
NA
DP14[H or C]M4241** MMH
(F)
H
(F)
NA
DP14[H or C]M4841** 3
(F)
3
(F)
3
(F)
3
(F)
3
(F)
DP14[H or C]M6041** 3
(F)
3
(F)
3
(F)
3
(F)
3
(F)
*(F) - Factory Setting
3 speed (H)igh/(M)edium/(L)ow: PSC motor
4 speed (H)igh/(ML)Medium Low/ (MH) Medium High/(L)ow: PSC motor
1/2/3/4/5: EEM motor
Electric Heat KW
Speed Taps Description: H / 4, 5 - High; M / 2, 3 - Medium; L / 1 - Low
Unit Model # 5 8 10 15 20
DP14CM3643** --- --- --- H
(F)
NA
DP14CM4843** --- --- --- 3
(F)
3
(F)
DP14CM6043** --- --- --- 3
(F)
3
(F)
DP13HM3643** MMH
(F)
H
(F)
NA
DP14HM4843** 3
(F)
3
(F)
3
(F)
3
(F)
3
(F)
DP14HM6043** 3
(F)
3
(F)
3
(F)
3
(F)
3
(F)
*(F) - Factory Setting
3 speed (H)igh/(M)edium/(L)ow: PSC motor
4 speed (H)igh/(ML)Medium Low/ (MH) Medium High/(L)ow: PSC motor
1/2/3/4/5: EEM motor
Electric Heat KW
Speed Taps Description: H / 4, 5 - High; M / 2, 3 - Medium; L / 1 - Low
MAINTENANCE
WARNING
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 Self Contained Package Air Conditioner and Heat Pump should op-
erate for many years without excessive service calls if the unit is in-
stalled properly. However it is recommended that the homeowner in-
spect the unit before a seasonal start up. The coils should be free of
debris so adequate airflow is achieved. The return and supply registers
should be free of any obstructions. The filters should be cleaned or
replaced. These few steps will help to keep the product up time to a
maximum. The Troubleshooting Chart (on page 14) should help in iden-
tifying problems if the unit does not operate properly.
SERVICE
THE FOLLOWING INFORMATION IS FOR USE BY QUALIFIED SERVICE AGENCY
ONLY: OTHERS SHOULD NOT ATTEMPT TO SERVICE THIS EQUIPMENT.
Common Causes of Unsatisfactory Operation of Heat Pump on the
Heating Cycle.
INADEQUATE AIR VOLUME THROUGH INDOOR COIL
When a heat pump is in the heating cycle, the indoor coil is functioning
as a condenser. The return air filter must always be clean, and sufficient
air volume must pass through the indoor coil to prevent excessive dis-
charge pressure, and high pressure cut out.
OUTSIDE AIR INTO RETURN DUCT
Do not introduce cold outside air into the return duct of a heat pump
installation. Do not allow air entering the indoor coil to drop below 65° F.
Air below this temperature will cause low discharge pressure, thus low
suction pressure, and excessive defrost cycling resulting in low heating
output. It may also cause false defrosting.
UNDERCHARGE
An undercharged heat pump on the heating cycle will cause low dis-
charge pressure resulting in low suction pressure and frost accumulation
on the outdoor coil.
POOR “TERMINATING” SENSOR CONTACT
The unit’s defrost terminating sensor must make good thermal contact
with the outdoor coil tubing. Poor contact may not terminate the unit’s
defrost cycle quickly enough to prevent the unit from cutting out on high
discharge pressure.
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO:
1. Solenoid not energized - In order to determine if the solenoid
is energized, touch the nut that holds the solenoid cover in
place with a screwdriver. If the nut magnetically holds the
screwdriver, the solenoid is energized and the unit is in the
cooling cycle.
2. No voltage at unit’s solenoid - Check unit voltage. If no voltage,
check wiring circuit.
3. Valve will not shift:
a. Undercharged - check for leaks;
b. Valve Body Damaged - Replace valve;
c. Unit Properly Charged - If it is in the heating cycle, raise the
discharge pressure by restricting airflow through the indoor
coil. If the valve does not shift, tap it lightly on both ends
with a screwdriver handle. DO NOT TAP THE VALVE BODY. If
the unit is in the cooling cycle, raise the discharge pressure
by restricting airflow through the outdoor coil. If the valve
does not shift after the above attempts, cut the unit off and
wait until the discharge and suction pressure equalize, and
repeat above steps. If the valve does not shift, replace it.