HTP PHE199-119 - Manual (Page 60)

60
LP-314 REV. 3.24.14
Fault Code ECS NOT CONNECTED
ECS NOT CONNECTED
PUMP OFF
This indicates the main control board and the
smaller ECS control board are not communicating
properly. This error allows the tank portion of the
unit to still operate, but will not allow the hydronic
heating module to operate until the error is cleared.
The second line indicates the status of the pump. 1. Ensure both ends of the ribbon cable are connected
properly and securely in place.
2. Next, check the ribbon cable for damage or wear. If any
problems are found, replace the ribbon cable.
3. If problem still occurs with the new ribbon cable, replace
the ECS board.
Fault Code TEMPER BLOCKING
TEMPER BLOCKING
PUMP ON 12:31P
This indicates a temporary hold on the burner ignition, and occurs when the top tank sensor is above the set point
and the bottom of the tank is substantially cooler than the top. This is a temporary hold on the burner only and all
other functions will remain functioning properly. This error will clear itself when either the top tank temperature drops
below the set point or the bottom temperature rises.
Fault Code E19
LINE VOLTAGE E19
PUMP OFF
This display indicates that the line voltage
frequency is out of range. This could happen if the
unit is being powered from a small gasoline
powered generator that is not functioning correctly
or overloaded. Inspect power wiring to unit and repair as necessary. If
connected to line voltage, notify electric utility company. If
connected to alternate power source such as generator or
inverter, make sure the line voltage frequency supplied by the
device is 60 Hz.
Fault Code FLU
HI FLUE PRESS FLU
PUMP ON
This display indicates that there is excessive flue
pressure. This code will reset automatically after
the high pressure condition is resolved. The second
line indicates the status of the pump.
1. Assure that the flue is not blocked.
2. Check the switch wiring by applying a jumper in place of
the switch. If the code clears with the jumper in place,
REPLACE the flue switch and connect the wires to the new
switch BEFORE running unit.
Do not use a jumper to remedy this error. A faulty
switch MUST be replaced. Failure to do so could
result in serious injury or death.
Fault Code LEO
LOW WATER LEVEL LEO
PUMP OFF
This display indicates that there is a low water level
in the main tank. This code will not allow the unit to
run until correct water level is restored. The second
line indicates the status of the pump. Note: While
the water level is low, the pump will be off.
1. Assure that there is adequate pressure and flow from the
cold water inlet by slightly opening the drain valve near the
tank.
2. Assure the DHW system has all air removed through a
high point hot water source, i.e. sink faucet.
3. Check wiring and probes. Replace if necessary.
Fault Code LOU
24 VOLT LOW LOU
PUMP ON
This display indicates that the 24 volt power supply
on the control is damaged or overloaded. This code
will reset automatically if it is the result of an
overload and that overload condition is removed.
The second line indicates the status of the pump.
Note: While 24 volt power is low, the pump output
will be on.
1. Ensure line voltage is between 100-128 volts.
2. Disconnect TT wiring. If error clears, there is an issue in
the thermostat wiring. Review external wiring.
3. If available, connect PC and use HTP service software to
check the 24v supply display in the lower left corner of the
screen. The number displayed here must be greater than 128
and should be at least 250. Use this as a troubleshooting
guide as you follow the steps below.
4. Remove 12 pin Molex connector from the field wiring
board. If the message clears, then the problem is with
external low voltage wiring. Examine the external low voltage
sensor wiring for shorts to ground and repair as necessary. If
message is still present, disconnect the UL 353 low water
cutoff to see if message clears. Replace faulty part. Check
low voltage wire harness in boiler for shorts to ground.
5. Remove the 20 pin Molex from the ECS board. If the
message clears, examine the wiring to the heating module
and fan for shorts or grounds and repair as necessary.
6. If message only occurs when the burner tries to light,
check gas valve for excessive current draw.
7. If message is present with the low voltage harness
disconnected from the 926 control board, replace the 926
control board.
Fault Code F00
WATER HIGH TEMP F00
PUMP ON
This display indicates that the water in the tank has
overheated. This is a serious safety issue, as
indicated by the red fault light and the flashing the
word LOCKOUT on the display. The unit will not
restart until it cools sufficiently and a technician
repairs the cause of overheating and resets the
unit. During this lockout fault, the pump will be on
as indicated on the second line of the display in an
effort to cool down the boiler.
1. Check central heating pump operation.
2. If the circulator pump is running, ensure there is water in
the system and that water is moving through the system as
intended. Ensure that all ball valves and or zone valves are
open or closed as intended.
3. Observe the temperature/pressure gauge. If the water is
not hot and this message is displayed, check the wiring to the
water eco sensor and repair if necessary.
4. If the wiring is intact, water is not excessively hot and this
code is still present, replace the eco sensor.