DriSteem Vapor-Logic Guía de instalación descargar pdf (Pagina 44)

TROUBLE-SHOOTING GUIDE

PROBLEM POSSIBLE CAUSE RECOMMENDED ACTION

FILL VALVE DOES

NOT CLOSE (con't.)

Fill valve is stuck Check if fill valve is installed backwards. If yes, re-pipe.

If there is a faulty internal spring or diaphragm in the fill

valve, replace valve.

Check if there is an obstruction that will not allow valve to

seat properly. Clean or replace valve as needed.

Check for control voltage across fill valve coil. (Check

wiring and controls.)

REDUCED OUTPUT

OR NO OUTPUT

(even though water

level is proper)

Heater malfunctioning Verify that proper voltage is being applied to heaters.

Check heater amperage.

Malfunctioning control

system

If heater contactor is not functioning, replace.

Check if heater fuses are blown and replace if required.

Check if auxillary limit controls are not allowing system to

operate (i.e.: duct humidistats, air flow proving switch,

etc.). Reset, replace or calibrate as needed. (Air flow

switch, terminals 14 & 15, measures 24 VAC if open.

On-off high limit, terminals 9 & 10, measures 21 VDC if

open.)

Check if the (optional) heater overtemperature

thermostat has been tripped. Reset if necessary.

Replace zone valve, if end switch is not closing.

FILL VALVE

CYCLES ON & OFF

FREQUENTLY

(several times per

minute)

Malfunctioning level control

system

Verify that unit has the new probe head design. If probe

head does not have skirt extensions surrounding probe

rods, it is an obsolete model and DRI-STEEM

recommends replacement of probe assembly.

If needed, clean probe tips.

Check water conductivity. (Minimum conductivity for

proper operation of level control system is 100 µS/cm.)

Verify that probe wiring is correct.

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DriSteem Vapor-Logic Guía de instalación Pagina 44

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