XLHP™ High Performance Heat Pump Installation and User’s Guide
15
HIGH WATER
TEMP
Water temperature is above 108° F.
LOW WATER
TEMP
Water temperature is below 40° F.
LOW WATER
FLOW
The pressure switch sensing water
flow is open.
REMOTE
TANK1 / TANK2
TANK1 and TANK2 relay remote
inputs are simultaneously
energized.
WATER THERM
SHORT
Water temperature thermistor
circuit shorted.
WATER THERM
OPEN
Water temperature thermistor
circuit open.
SUCTION TH
SHORT
Defrost thermistor circuit shorted
SUCTION TH
OPEN
Defrost thermistor circuit open.
BROWNOUT
The 24 VAC supply voltage to the
control board is low.
HIGH REFRIG
Refrigerant high pressure switch is
open.
LOW REFRIG
Refrigerant low pressure switch is
open.
FIVE ALARMS
Indicates that 5 faults have
occurred in 1 hour. This fault will
automatically reset in 1 hour or
can be manually reset by pressing
the ON/OFF button.
Control Panel Alarm Messages
Timers And Delays
1. Water Sensing Timer
One (1) minute timer to allow water from the body
of water to reach the XLHP
™
Heat Pump before
acquiring temperature. This timer initiates when
water first begins to run from stopped or low water
flow conditions or when the heat pump is turned ON.
Countdown time is in Minutes and Seconds.
2. Restart Delay Timer
Five (5) minute timer is a protection feature for the
heat pump’s compressor. This extends the life of the
compressors by not allowing it to cycle on and off
rapidly, (i.e. adjusting set point up and down around
actual temperature). Countdown time is in Minutes
and Seconds.
3. Defrost Delay Timer
Fifteen (15) minute timer where the heat pump is
in Defrost operation. Countdown time is in minutes
and seconds. Refer to page 17 for more details on
the defrost cycle.
4. Pump Start Delay
One to four (1-4) Hour timer used in conjunction with
the AutoSet feature. Counts down the time until the
control board will energize the internal contactor
in the heat pump. Countdown time is in Hours and
Minutes. See AutoSet section for more details.
5. Heat Pump Runtime Timer
This feature is an adjustable timer to allow the heat
pump to run (green light ON) for a predetermined
amount of time and then turn OFF (green light OFF).
During the selected time frame the green light is
ON and the heat pump will function in the normal
mode of operation and/or the operator can change
set points, functions, etc. The heat pump’s green
light will turn OFF and the heat pump will stay OFF
when time expires.
HEAT PUMP RUNTIME
REMAINING = NONE
HEAT PUMP RUNTIME
REMAINING = NONE
HEAT PUMP RUNTIME
REMAINING = NONE
HEAT PUMP RUNTIME
REMAINING = NONE
SENSING WATER TEMP
REMAINING = 1:00
RESTART DELAY
REMAINING = 5:00
DEFROST DELAY
REMAINING = 15:00
PUMP START DELAY
REMAINING 4:00
HEAT PUMP RUNTIME
REMAINING = NONE
