Download Service Manual - TES - Thermal Energy Systems
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Reset breakers or move cord to another outlet Faulty power cord Faulty switches or internal wiring Pump thermal protector tripped Pump motor faulty Pump seized - trips breaker Replace cord Check wiring & test switches - Repair as needed * Allow pump motor to cool and restart Replace pump motor Repair or replace pump head - Check motor Air in System Prime pump & bleed air from system – Add Fluid as needed. Check System pressure pump, Pressure Reducing Valve and wiring. Low on Fluid Faulty Pump Low Voltage Restriction in hoses and fittings Add fluid, prime pump & bleed air from system Repair or replace Solution Pump Check wiring & test switches - Repair as needed * Remove and clean or replace hoses & fittings as needed Building circuit breaker tripped. Reset breakers or move cord to another outlets Faulty power cord Lighted Heater Fuse Blown Faulty switches or internal wiring Faulty indicator light Replace cord Replace 2 amp fuse & Check wiring & test - Repair as needed * Check wiring & test switches - Repair as needed * Replace light Heater Operator Light Not Lighted Solution temperature above set point Normal Operation - If needed raise set point Loss of power See Power Light (All other lights also off.) Faulty switches or internal wiring Faulty indicator light Check wiring & test switches - Repair as needed * Replace light N! , & 5 & & & 2 2 Problem Cause Solution Heater Low Flow Light Not Lighted Flow rate too low Solution temp over operator set point Loss of power Faulty switches or internal wiring Faulty indicator light Check Pump - Open by-pass valve to increase flow. Normal Operation (Operator light also off.) See Power Light (All other lights also off.) Check wiring & test switches - Repair as needed * Replace light Heater Hi-Limit Light Not Lighted Solution temperature above set point Loss of power Faulty switches or internal wiring Faulty indicator light Normal Operation - If needed raise set point See Power Light (All other lights also off.) Check wiring & test switches - Repair as needed * Replace light Heater Main Gas Valve Light Not Lighted Solution temp over operator set point Solution temp over Hi-limit set point Flow rate too low Loss of power Normal Operation Normal Operation Check Pump - Open by-pass valve to increase flow. See Power Light (All other lights also off.) Check Propane supply - Check Flow rate - Restart heater Replace Main Gas Valve* Check wiring & test switches - Repair as needed * Replace light Refill Tanks - Check Hoses, regulator and connections Failed Ignition Faulty Valve Faulty switches or internal wiring Faulty indicator light Out of Propane System Overheating Faulty switches or internal wiring Flow rate too low Not enough Heat draw from system Check wiring & test switches - Repair as needed * Check Pump - Open by-pass valve to increase flow. Turn air movers switches to higher speed Increase number of TEX Thermal Exchangers System Not Heating Faulty switches or internal wiring Out of Propane Thermostats set too low Too Much Heat loss from system Check wiring & test switches - Repair as needed * Refill Tanks - Check Hoses and connections Adjust thermostats - Raise set points Turn air movers switches to lower speed Reduce number of TEX Thermal Exchangers Reduce length of hose being used – Insulate fittings Adjust by-pass valve as needed Check pump, hoses and connections. Adjust bypass valve Check heater jets, burners, etc – Repair as needed* By-pass Valve opened too much Flow Rate too low Faulty Heater Heater Cycling Too Often Faulty switches or internal wiring Flow rate too low Not enough Heat draw from system N! , & 5 Check wiring & test switches - Repair as needed * Check Pump - Open by-pass valve to increase flow. Increase number of TEX Thermal Exchangers Check hoses – Hose may be restricted Un-kink, repair or replace hoses Turn air movers switches to higher speed Increase number of TEX Thermal Exchangers & & &' 2 2 4 4 %< 7- & 9 ( 4 9 <F <%7- !<- . J 4 4 =4( 4?4! & < <++ + < ? 4F M When all the lights are ON as shown above, the heater is operating normally and the heater is firing. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M When the POWER, OPERATOR, LOW FLOW and HI-LIMIT lights are all ON and the MAIN GAS light is OFF, it means a lack of propane or ignition failure is preventing the burner from firing. This is a common occurrence at initial start up as air is bled from the propane hoses. Check the propane supply and shutoff valves to be sure propane is being supplied to the heater. Turn the power switch ON, wait 5-10 seconds for ignition to fire and if the burner does not fire and light does not come turn switch OFF and back on to repeat ignition process. This procedure may need to be repeated several times to get air out of the lines and allow the burner to fire. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M When the POWER, OPERATOR and HI-LIMIT lights are ON and the LOW FLOW and MAIN GAS lights are OFF it is an indication that the solution flow is too low to trigger the Flow Switch and the burner will not fire. Make sure pump switch is ON; pump is running and showing pressure on gauge. At least two TEX Thermal Exchangers must be connected for proper flow. With the TEX units connected and pump ON, open the By-Pass Valve to increase the solution flow. Open the valve slowly until the LOW FLOW light comes ON. Once LOW FLOW light comes ON continue opening the by-pass valve 1/4 – 1/2 turn. If the LOW FLOW light does not come ON recheck your hose connections and repeat the procedure. &( %< 7- <%7- !<- =4( 4?4! < + < ? 4F M During normal operation there may be times when the POWER and HI-LIMIT lights are ON and the other lights are OFF. This indicates that the Operator set point temperature has been reached and the heater is not firing. When the Operator set point is reached the burner shuts OFF and the MAIN GAS light goes OFF. The power to the Flow switch and LOW FLOW light goes through the Operator control, so when the OPERATOR light goes out when the Operator set point is reached the LOW FLOW light will turn OFF too. When the solution temperature cools below the Operator set point the lights will all come back ON. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M When the POWER light is the only light ON, it indicates that the solution temperature has exceeded both the Operator set point and the Hi-Limit set point and the burner has shut OFF. This could mean that the Hi-Limit set point is set too low or that there is a flow restriction to the TEX units and the heater is getting too hot. If only one TEX unit is connected and the by-pass valve is opened too much or there is a flow restriction that reduces the amount of heat draw from the system the heater may overheat and exceed the Hi-Limit set point even if it is adjusted properly. Re-set Operator and Hi-Limit controls and add TEX units to improve flow as needed to correct the overheating. If this light pattern occurs while the TES unit is cool and control temperatures are properly set, it could indicate an electrical problem in the control panel contact your nearest service center for assistance. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M If the HI-LIMIT and MAIN GAS lights are OFF and the POWER, OPERATOR and LOW FLOW lights are ON, the Hi-Limit set point may be set below the operator set point temperature. Reset the Hi-Limit control set point to proper temperature. The Hi-Limit set point must be at least 20ºF above the Operator set point temperature. The Operator set point is preset at the factory at 200ºF. It could also indicate a failure of the Hi-limit control. Repair wiring or replace hi-limit control as needed. &) %< 7- <%7- !<- =4( 4?4! < + < ? 4F M If all lights are OFF, the heater switch may be in the OFF position. Turn switch ON and check power supply to assure that power is being supplied to the TES unit. If the lights are still OFF remove Hood Assembly to access wiring and check fuse. Replace 2 amp fuse as needed or contact your nearest service center for assistance. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M If the POWER light is OFF and the other lights are ON there is a problem with the light panel or other wiring. Contact your nearest service center for assistance. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M If the POWER, HI-LIMIT and MAIN GAS lights are ON, and the OPERATOR and LOW FLOW lights are OFF there is a problem with the light panel or other wiring. Contact your nearest service center for assistance. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M If the POWER, OPERATOR, LOW FLOW and MAIN GAS lights are ON and the HI-LIMIT light is OFF there is a problem with the light panel or other wiring. Contact your nearest service center for assistance. %< 7- <%7- !<- =4( 4?4! < + < ? 4F M If the POWER, LOW FLOW, HI-LIMIT and MAIN GAS lights are ON and the OPERATOR light is OFF there is a problem with the light panel or other wiring. Contact your nearest service center for assistance. * , -% + 4D -7 7-O<4+ < 4! = %-7 -7 -7 47+ O O7 %4-<(O7F! =7 !7- % ?% % ?% %-7 -7D -7 4FM O O7 7J% F 4<F ! FG +4 !7=<! + < ! 7! L 4 G <FF7 ! P(% O O7 4D -? + 4D < D+ 4D 4F 7! / -7! -F L 4 G <FF7 ! & #/ 8? 7 4F 7! L 4 G <FF7 ! #/ 8+7? 7 < ! 7! L 4 G <FF7 ! !7J !=7-? 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G % ; % 2> !& & 8 7 H 6 & 6 & & 6 4 H & 2 8& 2 & & <F & 2 !& & & & 6 & & !7 & & & !7 & & 4 & & & & & & 6 & 4 & & & & • 2 # " , 2 2; % ! G " C ? !& " . 2 2 (+ 2 2 = & & & & 6 ; ; !& ; % ; !& ; - 2 #/ 2 & 6 6 ( ! 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